Viruses can infect a number of different portions of the computer’s operating and file system.
- System Sector Viruses: These infect control information on the disk itself.
- File Viruses: These infect program (COM and EXE) files.
- Macro Viruses: These infect files you might think of as data files. But, because they contain macro programs they can be infected.
- Companion Viruses: A special type that adds files that run first to your disk.
- Directory (Cluster) Viruses: A special type that infects through the disk directory.
- Batch File Viruses: These use text batch files to infect.
- Source Code Viruses: These add code to actual program source code.
- Visual Basic Files: These worms use the Visual Basic language to control the computer and perform tasks.
- Screensavers: These are not just pictures but executable code.
- Vulnerabilities: Problems in operating system or program code can be exploited.
That’s a summary, now see how each of these might work by continuing on in the tutorial.
 Types of Viruses |
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| Types of Viruses | System Sectors |
Comments from Original Post:
mmeap
Said this on 2010-05-03 At 08:16 am
How to infect exe file with visual basic
[Please look elsewhere; CKnow does not provide information on how to write a virus. –DaBoss]