Viruses can spread from computer to computer through removable media like disks and drives, or over networks and the internet. Worms can self-replicate without needing to be transferred, while trojans appear harmless but contain malicious code. Common computer viruses include Melissa, Kangen, and I Love You, and antivirus programs like AVG, Norton, and E Scan help detect and eliminate known viruses. It is important to learn about viruses to protect computers through up-to-date antivirus software, file backups, and safe online practices.

1. The Way Virus Spread A virus can only spread from one computer to another removable medium such as a floppy disk , CD , USB drive or by the Internet It also can spread through computers files on a network file system or a file system

2. Different Between Computer worm and Trojan Horses can spread itself to other computers without needing to be transferred as part of a host Trojan horse is a file that appears harmless until executed do not insert their code into other computer files.

3. Virus A computer virus is a computer program that can copy itself and infect a computer without permission or knowledge of the user.

4. Example Of AntiVirus AVG-Antivirus Protector Plus Norton Antivirus E Scan Dr Web Linux Shield

5. Example Of Computer Viruses Mellisa Kangen Ping pong I Love You

6. Important Of Learning This Topic We can detect and eliminate known viruses after the computer downloads or runs the executable We are able to scan opened files in addition to sent and received emails 'on the fly' in a similar manner. We may also learn how to prevent the damage done by viruses by making regular backups of data (and the Operating Systems) on different media

7. Reference www.yahoo.com www.google.com Wikipedia.com