>

Dheere Dheere (RoyalJattCom)

Yo Yo Honey Singh (Mp3MadCoM)

Dheere Dheere (RoyalJattCoM) track (Mp3MadCoM)

2012

21249292

eng - Downloaded From Mp3MadCoM

What is a computer virus1 An infective agent that typically consists of a nucleic acid molecule in a protein coat is too small to be seen by light microscopy and is able to multiply only within the living cells of a hostthe hepatitis B virusan infection or disease caused by a virusIve had a virusa harmful or corrupting influencethe virus of cruelty that is latent in all human beings

2 A piece of code which is capable of copying itself and typically has a detrimental effect such as corrupting the system or destroying data

Signs of a virusIf youre conversant with computer code looking at the actual strings of code in a suspect program can help spot suspicious or out of place commands But even if you dont know your way around codes it may help to look at the contents of a data file anyway Strange messages are commonly inserted by virus writers and can be read within the code Look at a data file with a word processing program and search for these

Whether you use a personal computer or work on a company mainframe you should know the most common signs of computer virus activity These include

bull Applications that dont work properlybull Disks cant be accessedbull Printing doesnt work correctlybull Pull-down menus are distortedbull File size changes for no apparent reasonbull Date of last access does not match date of

last usebull An increase in the number of files on the

system when nothing has been addedbull Uncommanded disk drive activitybull Unusual error messagesbull System slows down freezes or crashes

Signs of a virus conduitConduit is normally downloaded along with software bundles torrents freeware and shareware as a third party add-on extension toolbar or plugin You can also knowingly download the Conduit Community Toolbar for your browser without realizing that it is harmful Malicious software developers distribute their products with Conduit tools attached to steal personal information If you have a habit of downloading free applications and torrents you should be especially cautious Always perform your downloads from legitimate and trusted sources

Damage caused by computer virus

Computer virus can do something more than what you think Every single document that has been stored in the hard drive will lost forever if you donrsquot free your system of virus Losing personal information is a nightmare and it can ruin a project or your entire effort in just a few a minute You can buy a new computer but it is quite impossible to get back all those important documents once they are lost from the system

A few people believe that using antivirus is not a mandatory task when you are using a PC However they must remember that total system failure is another issue and most of the time virus seems responsible for this incident It can happen to both PCs and several desktops as well

Virus also gets access to e-mails and often interrupts the process of net surfing in many ways All your personal contacts and related information get exposed to public due to virus attack If a system gets victim of virus it can affect other systems as well and this scenario is quite common in the offices as a huge number of systems are in use their

General types of virusBoot virusProgram virusMultipartite virusStealth virusPolymorphic virusMacro virusActive x virus

Boot virusSince nobody uses floppy disks anymore these types of computer virus are left to infect only the master boot records of the hard disk The boot record program loads the operating system in the memory at startup These viruses replace the boot record and move it to a different part of the hard disk or simply overwrite it As you can imagine once you start your operating system it loads into memory along with the virus Once the virus is in the memory it is free to do whatever it was programmed to do To avoid loading the boot record viruses into memory you must boot your operating system from another source (another hard drive or a bootable CDDVD

Program viruses

These types of computer virus will infect only executable files (with extensions like BIN COM EXE OVL DRV and SYS) Once executed these programs load into memory along with the virus contained within them Once in the memory the scenario repeats ndash the virus is free to act and infect other files or simply deliver its payload These viruses are friendlier than boot viruses and can be removed a lot easier

Multipartite virusesThese computer viruses are hybrids derived from boot viruses and program viruses They infect executable files just like the program viruses but once the executable is executed it infects the master boot records The scenario is similar to the boot virusrsquos one once you boot your operating system the virus is loaded into the memory from where it is free to infect other programs and replicate itself ultimately delivering the payload

Stealth virusesThese viruses are specialized in avoiding detection and will use a number of techniques to do so Most of them simply redirect the hard disk head forcing it to read another memory sector instead of their own Some of them also alter the reading of the file size shown when listing the directory These types of computer virus are very hard to find by humans but antivirus software is specially designed to track them down and erase them

Polymorphic viruses

The polymorphic viruses will always change their source code from one infection to another Each infection is different and this makes detection very hard However detection is still possible depending on the antivirus

Macro virusesThis virus is relatively new and it infects macros within a template or document When you open a word processing document it activates the virus The virus infects the Normaldot template which is a general file used by all the documents So whenever you open an uninfected document by referring to the Normaldot file it gets infected as well This infection can only spread if infected documents are opened on another machine

Active X viruses

Most people do not know how to configure ActiveX and Java controls unconsciously leaving a security hole Applets are then allowed to run freely on the machine delivering all ActiveX viruses By simply turning off some ActiveX and Java controls in the browser a user can efficiently protect their PC from this type of computer virus

Anti- virusAntivirus software is a computer program that detects prevents and takes action to disarm or remove malicious software programs such as viruses and worms You can help protect your computer against viruses by using antivirus software such as Microsoft Security Essentials

Popular anti - virus

• Slide 1
• What is a computer virus
• Signs of a virus
• Slide 4
• Signs of a virus conduit
• Damage caused by computer virus
• General types of virus
• Boot virus
• Program viruses
• Multipartite viruses
• Stealth viruses
• Polymorphic viruses
• Macro viruses
• Active X viruses
• Anti- virus
• Popular anti - virus
• Slide 17

What is a computer virus1 An infective agent that typically consists of a nucleic acid molecule in a protein coat is too small to be seen by light microscopy and is able to multiply only within the living cells of a hostthe hepatitis B virusan infection or disease caused by a virusIve had a virusa harmful or corrupting influencethe virus of cruelty that is latent in all human beings

2 A piece of code which is capable of copying itself and typically has a detrimental effect such as corrupting the system or destroying data

Signs of a virusIf youre conversant with computer code looking at the actual strings of code in a suspect program can help spot suspicious or out of place commands But even if you dont know your way around codes it may help to look at the contents of a data file anyway Strange messages are commonly inserted by virus writers and can be read within the code Look at a data file with a word processing program and search for these

Whether you use a personal computer or work on a company mainframe you should know the most common signs of computer virus activity These include

bull Applications that dont work properlybull Disks cant be accessedbull Printing doesnt work correctlybull Pull-down menus are distortedbull File size changes for no apparent reasonbull Date of last access does not match date of

last usebull An increase in the number of files on the

system when nothing has been addedbull Uncommanded disk drive activitybull Unusual error messagesbull System slows down freezes or crashes

Signs of a virus conduitConduit is normally downloaded along with software bundles torrents freeware and shareware as a third party add-on extension toolbar or plugin You can also knowingly download the Conduit Community Toolbar for your browser without realizing that it is harmful Malicious software developers distribute their products with Conduit tools attached to steal personal information If you have a habit of downloading free applications and torrents you should be especially cautious Always perform your downloads from legitimate and trusted sources

Damage caused by computer virus

Computer virus can do something more than what you think Every single document that has been stored in the hard drive will lost forever if you donrsquot free your system of virus Losing personal information is a nightmare and it can ruin a project or your entire effort in just a few a minute You can buy a new computer but it is quite impossible to get back all those important documents once they are lost from the system

A few people believe that using antivirus is not a mandatory task when you are using a PC However they must remember that total system failure is another issue and most of the time virus seems responsible for this incident It can happen to both PCs and several desktops as well

Virus also gets access to e-mails and often interrupts the process of net surfing in many ways All your personal contacts and related information get exposed to public due to virus attack If a system gets victim of virus it can affect other systems as well and this scenario is quite common in the offices as a huge number of systems are in use their

General types of virusBoot virusProgram virusMultipartite virusStealth virusPolymorphic virusMacro virusActive x virus

Boot virusSince nobody uses floppy disks anymore these types of computer virus are left to infect only the master boot records of the hard disk The boot record program loads the operating system in the memory at startup These viruses replace the boot record and move it to a different part of the hard disk or simply overwrite it As you can imagine once you start your operating system it loads into memory along with the virus Once the virus is in the memory it is free to do whatever it was programmed to do To avoid loading the boot record viruses into memory you must boot your operating system from another source (another hard drive or a bootable CDDVD

Program viruses

These types of computer virus will infect only executable files (with extensions like BIN COM EXE OVL DRV and SYS) Once executed these programs load into memory along with the virus contained within them Once in the memory the scenario repeats ndash the virus is free to act and infect other files or simply deliver its payload These viruses are friendlier than boot viruses and can be removed a lot easier

Multipartite virusesThese computer viruses are hybrids derived from boot viruses and program viruses They infect executable files just like the program viruses but once the executable is executed it infects the master boot records The scenario is similar to the boot virusrsquos one once you boot your operating system the virus is loaded into the memory from where it is free to infect other programs and replicate itself ultimately delivering the payload

Stealth virusesThese viruses are specialized in avoiding detection and will use a number of techniques to do so Most of them simply redirect the hard disk head forcing it to read another memory sector instead of their own Some of them also alter the reading of the file size shown when listing the directory These types of computer virus are very hard to find by humans but antivirus software is specially designed to track them down and erase them

Polymorphic viruses

The polymorphic viruses will always change their source code from one infection to another Each infection is different and this makes detection very hard However detection is still possible depending on the antivirus

Macro virusesThis virus is relatively new and it infects macros within a template or document When you open a word processing document it activates the virus The virus infects the Normaldot template which is a general file used by all the documents So whenever you open an uninfected document by referring to the Normaldot file it gets infected as well This infection can only spread if infected documents are opened on another machine

Active X viruses

Most people do not know how to configure ActiveX and Java controls unconsciously leaving a security hole Applets are then allowed to run freely on the machine delivering all ActiveX viruses By simply turning off some ActiveX and Java controls in the browser a user can efficiently protect their PC from this type of computer virus

Anti- virusAntivirus software is a computer program that detects prevents and takes action to disarm or remove malicious software programs such as viruses and worms You can help protect your computer against viruses by using antivirus software such as Microsoft Security Essentials

Popular anti - virus

• Slide 1
• What is a computer virus
• Signs of a virus
• Slide 4
• Signs of a virus conduit
• Damage caused by computer virus
• General types of virus
• Boot virus
• Program viruses
• Multipartite viruses
• Stealth viruses
• Polymorphic viruses
• Macro viruses
• Active X viruses
• Anti- virus
• Popular anti - virus
• Slide 17

Signs of a virusIf youre conversant with computer code looking at the actual strings of code in a suspect program can help spot suspicious or out of place commands But even if you dont know your way around codes it may help to look at the contents of a data file anyway Strange messages are commonly inserted by virus writers and can be read within the code Look at a data file with a word processing program and search for these

Whether you use a personal computer or work on a company mainframe you should know the most common signs of computer virus activity These include

bull Applications that dont work properlybull Disks cant be accessedbull Printing doesnt work correctlybull Pull-down menus are distortedbull File size changes for no apparent reasonbull Date of last access does not match date of

last usebull An increase in the number of files on the

system when nothing has been addedbull Uncommanded disk drive activitybull Unusual error messagesbull System slows down freezes or crashes

Signs of a virus conduitConduit is normally downloaded along with software bundles torrents freeware and shareware as a third party add-on extension toolbar or plugin You can also knowingly download the Conduit Community Toolbar for your browser without realizing that it is harmful Malicious software developers distribute their products with Conduit tools attached to steal personal information If you have a habit of downloading free applications and torrents you should be especially cautious Always perform your downloads from legitimate and trusted sources

Damage caused by computer virus

Computer virus can do something more than what you think Every single document that has been stored in the hard drive will lost forever if you donrsquot free your system of virus Losing personal information is a nightmare and it can ruin a project or your entire effort in just a few a minute You can buy a new computer but it is quite impossible to get back all those important documents once they are lost from the system

A few people believe that using antivirus is not a mandatory task when you are using a PC However they must remember that total system failure is another issue and most of the time virus seems responsible for this incident It can happen to both PCs and several desktops as well

Virus also gets access to e-mails and often interrupts the process of net surfing in many ways All your personal contacts and related information get exposed to public due to virus attack If a system gets victim of virus it can affect other systems as well and this scenario is quite common in the offices as a huge number of systems are in use their

General types of virusBoot virusProgram virusMultipartite virusStealth virusPolymorphic virusMacro virusActive x virus

Boot virusSince nobody uses floppy disks anymore these types of computer virus are left to infect only the master boot records of the hard disk The boot record program loads the operating system in the memory at startup These viruses replace the boot record and move it to a different part of the hard disk or simply overwrite it As you can imagine once you start your operating system it loads into memory along with the virus Once the virus is in the memory it is free to do whatever it was programmed to do To avoid loading the boot record viruses into memory you must boot your operating system from another source (another hard drive or a bootable CDDVD

Program viruses

These types of computer virus will infect only executable files (with extensions like BIN COM EXE OVL DRV and SYS) Once executed these programs load into memory along with the virus contained within them Once in the memory the scenario repeats ndash the virus is free to act and infect other files or simply deliver its payload These viruses are friendlier than boot viruses and can be removed a lot easier

Multipartite virusesThese computer viruses are hybrids derived from boot viruses and program viruses They infect executable files just like the program viruses but once the executable is executed it infects the master boot records The scenario is similar to the boot virusrsquos one once you boot your operating system the virus is loaded into the memory from where it is free to infect other programs and replicate itself ultimately delivering the payload

Stealth virusesThese viruses are specialized in avoiding detection and will use a number of techniques to do so Most of them simply redirect the hard disk head forcing it to read another memory sector instead of their own Some of them also alter the reading of the file size shown when listing the directory These types of computer virus are very hard to find by humans but antivirus software is specially designed to track them down and erase them

Polymorphic viruses

The polymorphic viruses will always change their source code from one infection to another Each infection is different and this makes detection very hard However detection is still possible depending on the antivirus

Macro virusesThis virus is relatively new and it infects macros within a template or document When you open a word processing document it activates the virus The virus infects the Normaldot template which is a general file used by all the documents So whenever you open an uninfected document by referring to the Normaldot file it gets infected as well This infection can only spread if infected documents are opened on another machine

Active X viruses

Most people do not know how to configure ActiveX and Java controls unconsciously leaving a security hole Applets are then allowed to run freely on the machine delivering all ActiveX viruses By simply turning off some ActiveX and Java controls in the browser a user can efficiently protect their PC from this type of computer virus

Anti- virusAntivirus software is a computer program that detects prevents and takes action to disarm or remove malicious software programs such as viruses and worms You can help protect your computer against viruses by using antivirus software such as Microsoft Security Essentials

Popular anti - virus

• Slide 1
• What is a computer virus
• Signs of a virus
• Slide 4
• Signs of a virus conduit
• Damage caused by computer virus
• General types of virus
• Boot virus
• Program viruses
• Multipartite viruses
• Stealth viruses
• Polymorphic viruses
• Macro viruses
• Active X viruses
• Anti- virus
• Popular anti - virus
• Slide 17

bull Applications that dont work properlybull Disks cant be accessedbull Printing doesnt work correctlybull Pull-down menus are distortedbull File size changes for no apparent reasonbull Date of last access does not match date of

last usebull An increase in the number of files on the

system when nothing has been addedbull Uncommanded disk drive activitybull Unusual error messagesbull System slows down freezes or crashes

Signs of a virus conduitConduit is normally downloaded along with software bundles torrents freeware and shareware as a third party add-on extension toolbar or plugin You can also knowingly download the Conduit Community Toolbar for your browser without realizing that it is harmful Malicious software developers distribute their products with Conduit tools attached to steal personal information If you have a habit of downloading free applications and torrents you should be especially cautious Always perform your downloads from legitimate and trusted sources

Damage caused by computer virus

Computer virus can do something more than what you think Every single document that has been stored in the hard drive will lost forever if you donrsquot free your system of virus Losing personal information is a nightmare and it can ruin a project or your entire effort in just a few a minute You can buy a new computer but it is quite impossible to get back all those important documents once they are lost from the system

A few people believe that using antivirus is not a mandatory task when you are using a PC However they must remember that total system failure is another issue and most of the time virus seems responsible for this incident It can happen to both PCs and several desktops as well

Virus also gets access to e-mails and often interrupts the process of net surfing in many ways All your personal contacts and related information get exposed to public due to virus attack If a system gets victim of virus it can affect other systems as well and this scenario is quite common in the offices as a huge number of systems are in use their

General types of virusBoot virusProgram virusMultipartite virusStealth virusPolymorphic virusMacro virusActive x virus

Boot virusSince nobody uses floppy disks anymore these types of computer virus are left to infect only the master boot records of the hard disk The boot record program loads the operating system in the memory at startup These viruses replace the boot record and move it to a different part of the hard disk or simply overwrite it As you can imagine once you start your operating system it loads into memory along with the virus Once the virus is in the memory it is free to do whatever it was programmed to do To avoid loading the boot record viruses into memory you must boot your operating system from another source (another hard drive or a bootable CDDVD

Program viruses

These types of computer virus will infect only executable files (with extensions like BIN COM EXE OVL DRV and SYS) Once executed these programs load into memory along with the virus contained within them Once in the memory the scenario repeats ndash the virus is free to act and infect other files or simply deliver its payload These viruses are friendlier than boot viruses and can be removed a lot easier

Multipartite virusesThese computer viruses are hybrids derived from boot viruses and program viruses They infect executable files just like the program viruses but once the executable is executed it infects the master boot records The scenario is similar to the boot virusrsquos one once you boot your operating system the virus is loaded into the memory from where it is free to infect other programs and replicate itself ultimately delivering the payload

Stealth virusesThese viruses are specialized in avoiding detection and will use a number of techniques to do so Most of them simply redirect the hard disk head forcing it to read another memory sector instead of their own Some of them also alter the reading of the file size shown when listing the directory These types of computer virus are very hard to find by humans but antivirus software is specially designed to track them down and erase them

Polymorphic viruses

The polymorphic viruses will always change their source code from one infection to another Each infection is different and this makes detection very hard However detection is still possible depending on the antivirus

Macro virusesThis virus is relatively new and it infects macros within a template or document When you open a word processing document it activates the virus The virus infects the Normaldot template which is a general file used by all the documents So whenever you open an uninfected document by referring to the Normaldot file it gets infected as well This infection can only spread if infected documents are opened on another machine

Active X viruses

Most people do not know how to configure ActiveX and Java controls unconsciously leaving a security hole Applets are then allowed to run freely on the machine delivering all ActiveX viruses By simply turning off some ActiveX and Java controls in the browser a user can efficiently protect their PC from this type of computer virus

Anti- virusAntivirus software is a computer program that detects prevents and takes action to disarm or remove malicious software programs such as viruses and worms You can help protect your computer against viruses by using antivirus software such as Microsoft Security Essentials

Popular anti - virus

• Slide 1
• What is a computer virus
• Signs of a virus
• Slide 4
• Signs of a virus conduit
• Damage caused by computer virus
• General types of virus
• Boot virus
• Program viruses
• Multipartite viruses
• Stealth viruses
• Polymorphic viruses
• Macro viruses
• Active X viruses
• Anti- virus
• Popular anti - virus
• Slide 17

Signs of a virus conduitConduit is normally downloaded along with software bundles torrents freeware and shareware as a third party add-on extension toolbar or plugin You can also knowingly download the Conduit Community Toolbar for your browser without realizing that it is harmful Malicious software developers distribute their products with Conduit tools attached to steal personal information If you have a habit of downloading free applications and torrents you should be especially cautious Always perform your downloads from legitimate and trusted sources

Damage caused by computer virus

Computer virus can do something more than what you think Every single document that has been stored in the hard drive will lost forever if you donrsquot free your system of virus Losing personal information is a nightmare and it can ruin a project or your entire effort in just a few a minute You can buy a new computer but it is quite impossible to get back all those important documents once they are lost from the system

A few people believe that using antivirus is not a mandatory task when you are using a PC However they must remember that total system failure is another issue and most of the time virus seems responsible for this incident It can happen to both PCs and several desktops as well

Virus also gets access to e-mails and often interrupts the process of net surfing in many ways All your personal contacts and related information get exposed to public due to virus attack If a system gets victim of virus it can affect other systems as well and this scenario is quite common in the offices as a huge number of systems are in use their

General types of virusBoot virusProgram virusMultipartite virusStealth virusPolymorphic virusMacro virusActive x virus

Boot virusSince nobody uses floppy disks anymore these types of computer virus are left to infect only the master boot records of the hard disk The boot record program loads the operating system in the memory at startup These viruses replace the boot record and move it to a different part of the hard disk or simply overwrite it As you can imagine once you start your operating system it loads into memory along with the virus Once the virus is in the memory it is free to do whatever it was programmed to do To avoid loading the boot record viruses into memory you must boot your operating system from another source (another hard drive or a bootable CDDVD

Program viruses

These types of computer virus will infect only executable files (with extensions like BIN COM EXE OVL DRV and SYS) Once executed these programs load into memory along with the virus contained within them Once in the memory the scenario repeats ndash the virus is free to act and infect other files or simply deliver its payload These viruses are friendlier than boot viruses and can be removed a lot easier

Multipartite virusesThese computer viruses are hybrids derived from boot viruses and program viruses They infect executable files just like the program viruses but once the executable is executed it infects the master boot records The scenario is similar to the boot virusrsquos one once you boot your operating system the virus is loaded into the memory from where it is free to infect other programs and replicate itself ultimately delivering the payload

Stealth virusesThese viruses are specialized in avoiding detection and will use a number of techniques to do so Most of them simply redirect the hard disk head forcing it to read another memory sector instead of their own Some of them also alter the reading of the file size shown when listing the directory These types of computer virus are very hard to find by humans but antivirus software is specially designed to track them down and erase them

Polymorphic viruses

The polymorphic viruses will always change their source code from one infection to another Each infection is different and this makes detection very hard However detection is still possible depending on the antivirus

Macro virusesThis virus is relatively new and it infects macros within a template or document When you open a word processing document it activates the virus The virus infects the Normaldot template which is a general file used by all the documents So whenever you open an uninfected document by referring to the Normaldot file it gets infected as well This infection can only spread if infected documents are opened on another machine

Active X viruses

Most people do not know how to configure ActiveX and Java controls unconsciously leaving a security hole Applets are then allowed to run freely on the machine delivering all ActiveX viruses By simply turning off some ActiveX and Java controls in the browser a user can efficiently protect their PC from this type of computer virus

Anti- virusAntivirus software is a computer program that detects prevents and takes action to disarm or remove malicious software programs such as viruses and worms You can help protect your computer against viruses by using antivirus software such as Microsoft Security Essentials

Popular anti - virus

• Slide 1
• What is a computer virus
• Signs of a virus
• Slide 4
• Signs of a virus conduit
• Damage caused by computer virus
• General types of virus
• Boot virus
• Program viruses
• Multipartite viruses
• Stealth viruses
• Polymorphic viruses
• Macro viruses
• Active X viruses
• Anti- virus
• Popular anti - virus
• Slide 17

Damage caused by computer virus

Computer virus can do something more than what you think Every single document that has been stored in the hard drive will lost forever if you donrsquot free your system of virus Losing personal information is a nightmare and it can ruin a project or your entire effort in just a few a minute You can buy a new computer but it is quite impossible to get back all those important documents once they are lost from the system

A few people believe that using antivirus is not a mandatory task when you are using a PC However they must remember that total system failure is another issue and most of the time virus seems responsible for this incident It can happen to both PCs and several desktops as well

Virus also gets access to e-mails and often interrupts the process of net surfing in many ways All your personal contacts and related information get exposed to public due to virus attack If a system gets victim of virus it can affect other systems as well and this scenario is quite common in the offices as a huge number of systems are in use their

General types of virusBoot virusProgram virusMultipartite virusStealth virusPolymorphic virusMacro virusActive x virus

Boot virusSince nobody uses floppy disks anymore these types of computer virus are left to infect only the master boot records of the hard disk The boot record program loads the operating system in the memory at startup These viruses replace the boot record and move it to a different part of the hard disk or simply overwrite it As you can imagine once you start your operating system it loads into memory along with the virus Once the virus is in the memory it is free to do whatever it was programmed to do To avoid loading the boot record viruses into memory you must boot your operating system from another source (another hard drive or a bootable CDDVD

Program viruses

These types of computer virus will infect only executable files (with extensions like BIN COM EXE OVL DRV and SYS) Once executed these programs load into memory along with the virus contained within them Once in the memory the scenario repeats ndash the virus is free to act and infect other files or simply deliver its payload These viruses are friendlier than boot viruses and can be removed a lot easier

Multipartite virusesThese computer viruses are hybrids derived from boot viruses and program viruses They infect executable files just like the program viruses but once the executable is executed it infects the master boot records The scenario is similar to the boot virusrsquos one once you boot your operating system the virus is loaded into the memory from where it is free to infect other programs and replicate itself ultimately delivering the payload

Stealth virusesThese viruses are specialized in avoiding detection and will use a number of techniques to do so Most of them simply redirect the hard disk head forcing it to read another memory sector instead of their own Some of them also alter the reading of the file size shown when listing the directory These types of computer virus are very hard to find by humans but antivirus software is specially designed to track them down and erase them

Polymorphic viruses

The polymorphic viruses will always change their source code from one infection to another Each infection is different and this makes detection very hard However detection is still possible depending on the antivirus

Macro virusesThis virus is relatively new and it infects macros within a template or document When you open a word processing document it activates the virus The virus infects the Normaldot template which is a general file used by all the documents So whenever you open an uninfected document by referring to the Normaldot file it gets infected as well This infection can only spread if infected documents are opened on another machine

Active X viruses

Most people do not know how to configure ActiveX and Java controls unconsciously leaving a security hole Applets are then allowed to run freely on the machine delivering all ActiveX viruses By simply turning off some ActiveX and Java controls in the browser a user can efficiently protect their PC from this type of computer virus

Anti- virusAntivirus software is a computer program that detects prevents and takes action to disarm or remove malicious software programs such as viruses and worms You can help protect your computer against viruses by using antivirus software such as Microsoft Security Essentials

Popular anti - virus

• Slide 1
• What is a computer virus
• Signs of a virus
• Slide 4
• Signs of a virus conduit
• Damage caused by computer virus
• General types of virus
• Boot virus
• Program viruses
• Multipartite viruses
• Stealth viruses
• Polymorphic viruses
• Macro viruses
• Active X viruses
• Anti- virus
• Popular anti - virus
• Slide 17

General types of virusBoot virusProgram virusMultipartite virusStealth virusPolymorphic virusMacro virusActive x virus

Boot virusSince nobody uses floppy disks anymore these types of computer virus are left to infect only the master boot records of the hard disk The boot record program loads the operating system in the memory at startup These viruses replace the boot record and move it to a different part of the hard disk or simply overwrite it As you can imagine once you start your operating system it loads into memory along with the virus Once the virus is in the memory it is free to do whatever it was programmed to do To avoid loading the boot record viruses into memory you must boot your operating system from another source (another hard drive or a bootable CDDVD

Program viruses

These types of computer virus will infect only executable files (with extensions like BIN COM EXE OVL DRV and SYS) Once executed these programs load into memory along with the virus contained within them Once in the memory the scenario repeats ndash the virus is free to act and infect other files or simply deliver its payload These viruses are friendlier than boot viruses and can be removed a lot easier

Multipartite virusesThese computer viruses are hybrids derived from boot viruses and program viruses They infect executable files just like the program viruses but once the executable is executed it infects the master boot records The scenario is similar to the boot virusrsquos one once you boot your operating system the virus is loaded into the memory from where it is free to infect other programs and replicate itself ultimately delivering the payload

Stealth virusesThese viruses are specialized in avoiding detection and will use a number of techniques to do so Most of them simply redirect the hard disk head forcing it to read another memory sector instead of their own Some of them also alter the reading of the file size shown when listing the directory These types of computer virus are very hard to find by humans but antivirus software is specially designed to track them down and erase them

Polymorphic viruses

The polymorphic viruses will always change their source code from one infection to another Each infection is different and this makes detection very hard However detection is still possible depending on the antivirus

Macro virusesThis virus is relatively new and it infects macros within a template or document When you open a word processing document it activates the virus The virus infects the Normaldot template which is a general file used by all the documents So whenever you open an uninfected document by referring to the Normaldot file it gets infected as well This infection can only spread if infected documents are opened on another machine

Active X viruses

Most people do not know how to configure ActiveX and Java controls unconsciously leaving a security hole Applets are then allowed to run freely on the machine delivering all ActiveX viruses By simply turning off some ActiveX and Java controls in the browser a user can efficiently protect their PC from this type of computer virus

Anti- virusAntivirus software is a computer program that detects prevents and takes action to disarm or remove malicious software programs such as viruses and worms You can help protect your computer against viruses by using antivirus software such as Microsoft Security Essentials

Popular anti - virus

• Slide 1
• What is a computer virus
• Signs of a virus
• Slide 4
• Signs of a virus conduit
• Damage caused by computer virus
• General types of virus
• Boot virus
• Program viruses
• Multipartite viruses
• Stealth viruses
• Polymorphic viruses
• Macro viruses
• Active X viruses
• Anti- virus
• Popular anti - virus
• Slide 17

Boot virusSince nobody uses floppy disks anymore these types of computer virus are left to infect only the master boot records of the hard disk The boot record program loads the operating system in the memory at startup These viruses replace the boot record and move it to a different part of the hard disk or simply overwrite it As you can imagine once you start your operating system it loads into memory along with the virus Once the virus is in the memory it is free to do whatever it was programmed to do To avoid loading the boot record viruses into memory you must boot your operating system from another source (another hard drive or a bootable CDDVD

Program viruses

These types of computer virus will infect only executable files (with extensions like BIN COM EXE OVL DRV and SYS) Once executed these programs load into memory along with the virus contained within them Once in the memory the scenario repeats ndash the virus is free to act and infect other files or simply deliver its payload These viruses are friendlier than boot viruses and can be removed a lot easier

Multipartite virusesThese computer viruses are hybrids derived from boot viruses and program viruses They infect executable files just like the program viruses but once the executable is executed it infects the master boot records The scenario is similar to the boot virusrsquos one once you boot your operating system the virus is loaded into the memory from where it is free to infect other programs and replicate itself ultimately delivering the payload

Stealth virusesThese viruses are specialized in avoiding detection and will use a number of techniques to do so Most of them simply redirect the hard disk head forcing it to read another memory sector instead of their own Some of them also alter the reading of the file size shown when listing the directory These types of computer virus are very hard to find by humans but antivirus software is specially designed to track them down and erase them

Polymorphic viruses

The polymorphic viruses will always change their source code from one infection to another Each infection is different and this makes detection very hard However detection is still possible depending on the antivirus

Macro virusesThis virus is relatively new and it infects macros within a template or document When you open a word processing document it activates the virus The virus infects the Normaldot template which is a general file used by all the documents So whenever you open an uninfected document by referring to the Normaldot file it gets infected as well This infection can only spread if infected documents are opened on another machine

Active X viruses

Most people do not know how to configure ActiveX and Java controls unconsciously leaving a security hole Applets are then allowed to run freely on the machine delivering all ActiveX viruses By simply turning off some ActiveX and Java controls in the browser a user can efficiently protect their PC from this type of computer virus

Anti- virusAntivirus software is a computer program that detects prevents and takes action to disarm or remove malicious software programs such as viruses and worms You can help protect your computer against viruses by using antivirus software such as Microsoft Security Essentials

Popular anti - virus

• Slide 1
• What is a computer virus
• Signs of a virus
• Slide 4
• Signs of a virus conduit
• Damage caused by computer virus
• General types of virus
• Boot virus
• Program viruses
• Multipartite viruses
• Stealth viruses
• Polymorphic viruses
• Macro viruses
• Active X viruses
• Anti- virus
• Popular anti - virus
• Slide 17

Program viruses

These types of computer virus will infect only executable files (with extensions like BIN COM EXE OVL DRV and SYS) Once executed these programs load into memory along with the virus contained within them Once in the memory the scenario repeats ndash the virus is free to act and infect other files or simply deliver its payload These viruses are friendlier than boot viruses and can be removed a lot easier

Multipartite virusesThese computer viruses are hybrids derived from boot viruses and program viruses They infect executable files just like the program viruses but once the executable is executed it infects the master boot records The scenario is similar to the boot virusrsquos one once you boot your operating system the virus is loaded into the memory from where it is free to infect other programs and replicate itself ultimately delivering the payload

Stealth virusesThese viruses are specialized in avoiding detection and will use a number of techniques to do so Most of them simply redirect the hard disk head forcing it to read another memory sector instead of their own Some of them also alter the reading of the file size shown when listing the directory These types of computer virus are very hard to find by humans but antivirus software is specially designed to track them down and erase them

Polymorphic viruses

The polymorphic viruses will always change their source code from one infection to another Each infection is different and this makes detection very hard However detection is still possible depending on the antivirus

Macro virusesThis virus is relatively new and it infects macros within a template or document When you open a word processing document it activates the virus The virus infects the Normaldot template which is a general file used by all the documents So whenever you open an uninfected document by referring to the Normaldot file it gets infected as well This infection can only spread if infected documents are opened on another machine

Active X viruses

Most people do not know how to configure ActiveX and Java controls unconsciously leaving a security hole Applets are then allowed to run freely on the machine delivering all ActiveX viruses By simply turning off some ActiveX and Java controls in the browser a user can efficiently protect their PC from this type of computer virus

Anti- virusAntivirus software is a computer program that detects prevents and takes action to disarm or remove malicious software programs such as viruses and worms You can help protect your computer against viruses by using antivirus software such as Microsoft Security Essentials

Popular anti - virus

• Slide 1
• What is a computer virus
• Signs of a virus
• Slide 4
• Signs of a virus conduit
• Damage caused by computer virus
• General types of virus
• Boot virus
• Program viruses
• Multipartite viruses
• Stealth viruses
• Polymorphic viruses
• Macro viruses
• Active X viruses
• Anti- virus
• Popular anti - virus
• Slide 17

Multipartite virusesThese computer viruses are hybrids derived from boot viruses and program viruses They infect executable files just like the program viruses but once the executable is executed it infects the master boot records The scenario is similar to the boot virusrsquos one once you boot your operating system the virus is loaded into the memory from where it is free to infect other programs and replicate itself ultimately delivering the payload

Stealth virusesThese viruses are specialized in avoiding detection and will use a number of techniques to do so Most of them simply redirect the hard disk head forcing it to read another memory sector instead of their own Some of them also alter the reading of the file size shown when listing the directory These types of computer virus are very hard to find by humans but antivirus software is specially designed to track them down and erase them

Polymorphic viruses

The polymorphic viruses will always change their source code from one infection to another Each infection is different and this makes detection very hard However detection is still possible depending on the antivirus

Macro virusesThis virus is relatively new and it infects macros within a template or document When you open a word processing document it activates the virus The virus infects the Normaldot template which is a general file used by all the documents So whenever you open an uninfected document by referring to the Normaldot file it gets infected as well This infection can only spread if infected documents are opened on another machine

Active X viruses

Most people do not know how to configure ActiveX and Java controls unconsciously leaving a security hole Applets are then allowed to run freely on the machine delivering all ActiveX viruses By simply turning off some ActiveX and Java controls in the browser a user can efficiently protect their PC from this type of computer virus

Anti- virusAntivirus software is a computer program that detects prevents and takes action to disarm or remove malicious software programs such as viruses and worms You can help protect your computer against viruses by using antivirus software such as Microsoft Security Essentials

Popular anti - virus

• Slide 1
• What is a computer virus
• Signs of a virus
• Slide 4
• Signs of a virus conduit
• Damage caused by computer virus
• General types of virus
• Boot virus
• Program viruses
• Multipartite viruses
• Stealth viruses
• Polymorphic viruses
• Macro viruses
• Active X viruses
• Anti- virus
• Popular anti - virus
• Slide 17

Stealth virusesThese viruses are specialized in avoiding detection and will use a number of techniques to do so Most of them simply redirect the hard disk head forcing it to read another memory sector instead of their own Some of them also alter the reading of the file size shown when listing the directory These types of computer virus are very hard to find by humans but antivirus software is specially designed to track them down and erase them

Polymorphic viruses

The polymorphic viruses will always change their source code from one infection to another Each infection is different and this makes detection very hard However detection is still possible depending on the antivirus

Macro virusesThis virus is relatively new and it infects macros within a template or document When you open a word processing document it activates the virus The virus infects the Normaldot template which is a general file used by all the documents So whenever you open an uninfected document by referring to the Normaldot file it gets infected as well This infection can only spread if infected documents are opened on another machine

Active X viruses

Most people do not know how to configure ActiveX and Java controls unconsciously leaving a security hole Applets are then allowed to run freely on the machine delivering all ActiveX viruses By simply turning off some ActiveX and Java controls in the browser a user can efficiently protect their PC from this type of computer virus

Anti- virusAntivirus software is a computer program that detects prevents and takes action to disarm or remove malicious software programs such as viruses and worms You can help protect your computer against viruses by using antivirus software such as Microsoft Security Essentials

Popular anti - virus

• Slide 1
• What is a computer virus
• Signs of a virus
• Slide 4
• Signs of a virus conduit
• Damage caused by computer virus
• General types of virus
• Boot virus
• Program viruses
• Multipartite viruses
• Stealth viruses
• Polymorphic viruses
• Macro viruses
• Active X viruses
• Anti- virus
• Popular anti - virus
• Slide 17

Polymorphic viruses

The polymorphic viruses will always change their source code from one infection to another Each infection is different and this makes detection very hard However detection is still possible depending on the antivirus

Macro virusesThis virus is relatively new and it infects macros within a template or document When you open a word processing document it activates the virus The virus infects the Normaldot template which is a general file used by all the documents So whenever you open an uninfected document by referring to the Normaldot file it gets infected as well This infection can only spread if infected documents are opened on another machine

Active X viruses

Most people do not know how to configure ActiveX and Java controls unconsciously leaving a security hole Applets are then allowed to run freely on the machine delivering all ActiveX viruses By simply turning off some ActiveX and Java controls in the browser a user can efficiently protect their PC from this type of computer virus

Anti- virusAntivirus software is a computer program that detects prevents and takes action to disarm or remove malicious software programs such as viruses and worms You can help protect your computer against viruses by using antivirus software such as Microsoft Security Essentials

Popular anti - virus

• Slide 1
• What is a computer virus
• Signs of a virus
• Slide 4
• Signs of a virus conduit
• Damage caused by computer virus
• General types of virus
• Boot virus
• Program viruses
• Multipartite viruses
• Stealth viruses
• Polymorphic viruses
• Macro viruses
• Active X viruses
• Anti- virus
• Popular anti - virus
• Slide 17

Macro virusesThis virus is relatively new and it infects macros within a template or document When you open a word processing document it activates the virus The virus infects the Normaldot template which is a general file used by all the documents So whenever you open an uninfected document by referring to the Normaldot file it gets infected as well This infection can only spread if infected documents are opened on another machine

Active X viruses

Most people do not know how to configure ActiveX and Java controls unconsciously leaving a security hole Applets are then allowed to run freely on the machine delivering all ActiveX viruses By simply turning off some ActiveX and Java controls in the browser a user can efficiently protect their PC from this type of computer virus

Anti- virusAntivirus software is a computer program that detects prevents and takes action to disarm or remove malicious software programs such as viruses and worms You can help protect your computer against viruses by using antivirus software such as Microsoft Security Essentials

Popular anti - virus

• Slide 1
• What is a computer virus
• Signs of a virus
• Slide 4
• Signs of a virus conduit
• Damage caused by computer virus
• General types of virus
• Boot virus
• Program viruses
• Multipartite viruses
• Stealth viruses
• Polymorphic viruses
• Macro viruses
• Active X viruses
• Anti- virus
• Popular anti - virus
• Slide 17

Active X viruses

Most people do not know how to configure ActiveX and Java controls unconsciously leaving a security hole Applets are then allowed to run freely on the machine delivering all ActiveX viruses By simply turning off some ActiveX and Java controls in the browser a user can efficiently protect their PC from this type of computer virus

Anti- virusAntivirus software is a computer program that detects prevents and takes action to disarm or remove malicious software programs such as viruses and worms You can help protect your computer against viruses by using antivirus software such as Microsoft Security Essentials

Popular anti - virus

• Slide 1
• What is a computer virus
• Signs of a virus
• Slide 4
• Signs of a virus conduit
• Damage caused by computer virus
• General types of virus
• Boot virus
• Program viruses
• Multipartite viruses
• Stealth viruses
• Polymorphic viruses
• Macro viruses
• Active X viruses
• Anti- virus
• Popular anti - virus
• Slide 17

Anti- virusAntivirus software is a computer program that detects prevents and takes action to disarm or remove malicious software programs such as viruses and worms You can help protect your computer against viruses by using antivirus software such as Microsoft Security Essentials

Popular anti - virus

• Slide 1
• What is a computer virus
• Signs of a virus
• Slide 4
• Signs of a virus conduit
• Damage caused by computer virus
• General types of virus
• Boot virus
• Program viruses
• Multipartite viruses
• Stealth viruses
• Polymorphic viruses
• Macro viruses
• Active X viruses
• Anti- virus
• Popular anti - virus
• Slide 17

Popular anti - virus

• Slide 1
• What is a computer virus
• Signs of a virus
• Slide 4
• Signs of a virus conduit
• Damage caused by computer virus
• General types of virus
• Boot virus
• Program viruses
• Multipartite viruses
• Stealth viruses
• Polymorphic viruses
• Macro viruses
• Active X viruses
• Anti- virus
• Popular anti - virus
• Slide 17

• Slide 1
• What is a computer virus
• Signs of a virus
• Slide 4
• Signs of a virus conduit
• Damage caused by computer virus
• General types of virus
• Boot virus
• Program viruses
• Multipartite viruses
• Stealth viruses
• Polymorphic viruses
• Macro viruses
• Active X viruses
• Anti- virus
• Popular anti - virus
• Slide 17