The document discusses computer viruses, types of computer viruses like worms, Trojan horses, time bombs, and how they spread through email and networks. It mentions some common computer viruses like SoBig and Blaster and describes basic data security methods like firewalls, user IDs, passwords, and biometric authentication. The document also briefly introduces computer ethics and the importance of responsible computer use.

1. .
.

2. .
.
.
.
:
.
.
.
.

3. Hacker

4. Computer Virus
.
.

5. Computer Virus
:
Worm
.
Trojan Horses
e-mail
.

6. Computer Virus
Time Bombs
.

7. Computer Virus
:
.
.
.
.

8. Computer Virus
:
-
e-Mail Server -
.
.

9. Computer Virus
-
.
.
.

10. Computer Virus
-
–
Server
. Node

11. Computer Virus
:
.
http://www.norton.com Norton
http://www.macaffee.com MacAffee

12. Computer Virus
McAfee

13. Computer Virus
:
SASR
.

14. Computer Virus
SoBig
.

15. Computer Virus
Blaster
.
Gobot
Firewall
Blaster
.

16. Computer Virus
.
.

17. Data Security
Data Security
Data Security
:

18. Data Security
Unauthorized Access -
.
Lost/Corrupt Data -
.

19. Data Security
Data Security
Systems
:
User ID
User
Password

20. Data Security
User Authentications:
.
User
Authorization.
. Computer Virus
-
.

21. Data Security
.
.
:

22. Data Security
Finger Print & Hand Geometry Reader
Voice Recognition
Iris Scanner
Face Reader
Camera

23. WTO
.

24. :
.
.
.

25. Computer Ethics
:
.
.
.

26. Computer Ethics
.
.
. -
.
.
.
.