Computer worm is a program that replicates itself on the network and can be a real system hog. Worm can penetrate the network by using security vulnerability in the operating system or by opening a malicious attachment or link in an email message or chat session.
Worm versus Virus
- Worm is different than Virus. Virus need to attach itself to an existing program which is not the case with Worm. Worms are independent program.
- Worm tends to harm the network by copying itself to multiple locations and using bandwidth and network resources whereas Virus harms computer by corrupting and modifying files.
- Worms spread much faster than virus.
