Understanding the Difference between Viruses, Worms, and Trojans

Understanding the Difference between Viruses, Worms, and Trojans

Viruses, Trojans, and Worms are all malicious programs that can cause damage, threaten your data, and slow your computer, but they do have some differences.

A virus is a program that attaches to an existing program or file. It moves from computer to computer with the aid of human interaction. A great example is infected Word documents. People open the file then it moves throughout the organization infecting each computer.

A worm is very similar to a virus. You can consider it as a subset of the virus family. Worms infect existing files just like a traditional virus, but they have one additional feature. They do not rely on human action to move between computers. They take advantage of communication functions of your computer to move between computers. They can jump from your computer to a shared folder on another computer, and keep spreading indefinitely.

Trojans do not infect other files. They are a malicious program posing as another program. A Trojan looks like a file for a game, screensaver, or other application, but when you execute the program, it infects your PC and starts its havoc.

The final category is blended threats. A blended threat a malicious program written that takes advantage of features from worms, viruses, and Trojans. Many times, they start as a Trojan, then infect files on your computers, and start moving through the network like a worm.

Geeks Mobile Technicians deal with all types of malicious programs including Trojans, worms, viruses, and malware programs.



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