What are various types of pc virus?
Worms This malicious program category largely exploits operating system vulnerabilities to spread itself. The class was named for the way the worms crawl from computer to computer, using networks and e-mail. This feature gives many worms a rather high speed in spreading themselves. Worms penetrate a computer, search for network addresses of other computers, and send a burst of self-made copies to these addresses. In addition to network addresses, worms often utilize data from e-mail client address books. Some of these malicious programs occasionally create working files on system disks, but they can run without any system resources at all (with the exception of RAM). Viruses Programs that infected other programs, adding their own code to them to gain control of the infected files when they are opened. This simple definition explains the fundamental action performed by a virus – infection. Trojans Programs that carry out unauthorized actions on computers, such as deleting information on
