1. Computer viruses By: Shannon Simonian

2. What is a computer virus?  -Shares traits of a biological virus in people.  -Computer viruses pass from computer to computer just like a virus does from person to person.  -A computer virus attaches itself on top of programs or documents in order to get executed.  -Once the virus is up and running it is able to infect other programs or documents on the computer.  -Shares traits of a biological virus in people.  -Computer viruses pass from computer to computer just like a virus does from person to person.  -A computer virus attaches itself on top of programs or documents in order to get executed.  -Once the virus is up and running it is able to infect other programs or documents on the computer.

3. Most commom types of infection  1. Virus  2. Email virus  3. Worms  4. Trojan horse  1. Virus  2. Email virus  3. Worms  4. Trojan horse

4. viruses  Viruses are just small pieces of software that attaches on programs.  Every time that specific program runs, the virus runs too and has the chance to reproduce.  Viruses are just small pieces of software that attaches on programs.  Every time that specific program runs, the virus runs too and has the chance to reproduce.

5. Email viruses  Email viruses move around in email messages.  They are able to mail themselves to anyone that is in the users address book.  Email viruses move around in email messages.  They are able to mail themselves to anyone that is in the users address book.

6. worms  Worms are a piece of software that use computer networks and security holes to replicate itself.

7. Trojan horses  Trojan horses are disguised as computer programs (such as a game).  When it is used, it causes damage and may erase information on the computer.  Trojan horses do not have the capability to replicate themselves.  Trojan horses are disguised as computer programs (such as a game).  When it is used, it causes damage and may erase information on the computer.  Trojan horses do not have the capability to replicate themselves.

8. Prevention of traditional viruses kTo prevent traditional viruses - you kshould run a more secure operating ksystem like Unix. kTo prevent traditional viruses - you kshould run a more secure operating ksystem like Unix.

9. Protection on unsecured operating systems  1. Buy virus protection  2. Avoid programs from unknown sources (like the internet)  3. Stick with purchased software on cd’s and not dowloadable software.  1. Buy virus protection  2. Avoid programs from unknown sources (like the internet)  3. Stick with purchased software on cd’s and not dowloadable software.

10. Protection on Emails  1. Don’t open unknown emails.  2. Make sure that macro virus protection is running in all applications on the computer.  1. Don’t open unknown emails.  2. Make sure that macro virus protection is running in all applications on the computer.

11. Questions???