Return to. Multipart tutorial describes how computer viruses work. Strange as it may sound, the computer virus is something of an Information Age marvel. On one hand, viruses show us how vulnerable we are - a properly engineered virus can have a devastating effect, disrupting productivity and doing billions of dollars in damages. www. howstuffworks. com/virus. htm www. howstuffworks. com/virus. htm. A computer virus is a computer program that can copy itself and infect a computer without permission or knowledge of the user. The term "virus" is also commonly used, albeit erroneously, to refer to many different types of malware and adware programs. The original virus may modify the copies. en. wikipedia. org/wiki/Computer_virus en. wikipedia. org/wiki/Computer_virus. Computer viruses are most easily spread by attachments in e-mail messages or by instant messaging messages. Computer viruses also spread by using downloads on the Internet. Computer viruses can be hidden in pirated software or in other files or programs that you may download. support. microsoft. com/kb/129972. Learn how to prevent computer viruses and improve your computer security. Keep your computer current with the latest updates, antivirus tools, Computer viruses are small software programs that are designed to spread from one computer to another and to interfere with computer operation. www. microsoft. com/protect/computer/basics/virus. mspx www. microsoft. com/protect/computer/basics/virus. mspx. Just as biological viruses infect people, spreading from person to person, computer viruses infect personal computers (PCs) and servers, the computers that control access to a network of computers. Parasitic or file viruses infect executable files or programs in the computer. encarta. msn. com/encyclopedia_761569261/Virus_(computer). encarta. msn. com/encyclopedia_761569261/Virus_(computer). html. Most actual reviews about Computer worm viruses, Computer free theme and Computer enginering However, even get local area and Software Accessories computer worm viruses Cell Phone Internet service if they are for ninety 90 days later. rapid487. iespana. es/computer-worm-viruses. html rapid487. iespana. es/computer-worm-viruses. html. The web is a scary place:viruses, spyware, and more. Stay up to date on computer secuirty at Gadgetell. www. gadgetell. com/tech/archives/category/security/. Trojans are similiar to worms. In contrast to worms and viruses, however, trojans do not replicate themselves or seek to infect other systems once installed on a computer. compnetworking. about. com/cs/worldwideweb/g/bldef_trojan. compnetworking. about. com/cs/worldwideweb/g/bldef_trojan. htm. Embed URL. bb&ob; border-bottom : 1px solid #E2ECF5; &cb;.