What you'll learn

• Meaning of computer virus.
• Types of computer virus:
• - boot sector;
• - executable file virus;
• - attack on document.
• Example of viruses:- Trojan horse, Sleeper, Logic bomb, Alabama virus, Christmas virus
• Sources of viruses:
• - infected diskettes;
• - infected CD-ROMS;
• - e-mails;
• - Internet downloads;
• - illegal duplication of Software, etc.
• Virus Warning Signs:
• - slowing down of response time
• - presence of tiny dots
• - wandering across the screen.
• - incomplete saving of file
• - corruption of the system set-up instructions.
• - Appearance of strange characters.
• Virus detection (Antivirus):
• - Norton Anti-virus
• - McAfee Virus scan
• - Dr. Solomon’s Took Kit, etc