The most common types of Malware and difference between worms and viruses

Wednesday, July 29, 2009

The most common type of malware are viruses, worms, Trojan horse, logic bombs, and back doors. Worm is a malicious program which do not require another program for replication. It can replicate themselves as long as the memory, hard disk space and network bandwidth is available. If our system is infected with worm then every website we visit are also affected by it because it places working copies of worm on their servers.
Whereas viruses itself cannot do anything it needs application program to transmit the virus from one machine to another. So it attaches itself to the program and take control of that programs to target computer. Then virus controlled computers starts to replicate itself to target other computers.