You can detect and protect your computer against viruses.
Viruses can cause many problems with your computer.
Young programmers learning about viruses and the techniques used to write them.
Then they might write one to prove that they can do it, or to see how far it could spread.
As late as 1999, widespread viruses such as the Melissa virus appear to have been written chiefly as pranks.
Spammer viruses, such as the Sobig and Mydoom virus families, are commissioned by e-mail spam gangs.
Such viruses include Maleware, Trojan horse programs, and certain forms of hijacking spyware.
Protection Protection from spyware is a feature integrated in security solutions, and is detected in the same way as viruses, Trojans and worms.
Always scan your computer to check for viruses.
Hundreds new viruses appear and spread in hours around the world daily.
This problem must not be mistaken for that of determining, within a broad class of programs, that a virus is not present.
This problem differs in that it does not require the ability to recognize all viruses.
Today, some draw the distinction between viruses and worms by saying that a virus requires user intervention to spread, where as a worm spreads automatically.
The best-known types of malware, viruses and worms, are known for the manner in which they spread, rather than any other particular behavior.
Unlike viruses and worms, spyware does not usually self-replicate.
Some Anti-Virus software, categorizes spyware programs as "extended threats" and now offers real-time protection from them (as it does for viruses).