What is a Computer Virus?
A computer virus is a program designed and written to affect the computer by altering the way it works.
Structure of a Virus
Spreading Module: Defines the method of spreading the virus.
Payload Module: Defines the destructive actions to be performed during the execution stage.
Types of Viruses
- Virus
- Trojans Horse
- Worm
Virus
A computer virus is a program – a piece of executable code – that has the unique ability to replicate.
- spread quickly and are often difficult to destroy.
- can attach themselves to just about any type of executable file
Trojan Horse
- A Trojan is a malware that performs a malicious action but has no replication abilities.
- When a Trojan is executed, you may experience.
- Unwanted system problems.
- Loss of valuable data.
Worm
A computer worm is a self-contained program ( or set of programs ) that is able to spread.
- Copies of itself.
- Its Segments to other computer systems.
Antivirus software…
- Bitdefender
- Kaspersky
- Norton
- McAfee
- ESET Nod32
- AVG
- avast
- AVIRA AntiVir
- Panda
