The document discusses viruses and anti-viruses. It outlines an agenda covering computer viruses including what they are, types of viruses like boot sector, file infector, multi-partite and macro viruses. It also discusses how viruses work and anti-virus methods to detect and clean viruses. Best practices are provided like regular backups, installing anti-virus software, daily scans, checking downloads and attachments, being careful of new files and alert for virus activities. The document provides an overview of viruses, types, how they work and anti-virus defenses without going into detail on any single topic.

1. Topic Name:
Virus & Anti-Virus
Group members:
55-60

2. Agenda :
▪ Viruses:
– What is the Computer virus?
– Computer Virus Time Line
– Types of Computer Virus
▪ Boot Sector Virus
▪ File Infector Virus
▪
▪
▪
▪
Multi-partite Virus
Macro Virus
Trojan / Trojan Horse
Worm
– How does computer virus works?
# Anti-Viruses:
- How to detect virus?
- How to clean virus?
- Best Practices

3. What is the Virus?

4. Computer Virus Time Line
• 1949
• 1981
• 1988
• 1991
• 1999
• 2000
• 2001

5. Types of virus:
Boot Sector Virus

6. File Infector Virus:

7. Multi-partite Virus:

8. Macro Virus

9. Trojan Horse:

10. Worm:

11. How does computer virus works?

12. Anti-virus:

13. How to detect virus?

14. How to clean virus?

15. How to clean virus?
▪ The steps to reinstall the whole system –
–
–
–
–
–
Reboot the PC using a clean startup disk.
Type in MBR to rewrite the Master Boot Record.
Format DOS partitions.
Reinstall Windows XP or other os and other applications.
Install Antivirus Software and apply the latest virus definition data.

16. Best Practices:

Regular Backup

Install Anti-virus Software

Daily Virus Scan

Check Downloaded Files And Email Attachments

Be careful when use new software and files

Be alert for virus activities

Be calm when virus attacks