ويروسها ، كرمها وتروژانها 15 ص
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What are viruses, worms, and Trojans? http://www.microsoft.com/athome/security/viruses/fwbenefits.mspx Viruses, worms, and Trojans are malicious programs that can cause damage to your computer and information on your computer. They can also slow down the Internet, and they might even use your computer to spread themselves to your friends, family, co-workers, and the rest of the Web. The good news is that with an ounce of prevention and some good common sense, you are less likely to fall victim to these threats. Think of it as locking your front door to protect your entire family. Read on to learn about the characteristics and differences of viruses, worms, and Trojans. What is a virus? What is a worm? What is a Trojan? How do worms and other viruses spread? How can I tell if I have a worm or other virus? Next steps: Reducing your virus risk What is a virus? A virus is a piece of computer code that attaches itself to a program or file so it can spread from computer to computer, infecting as it travels. Viruses can damage your software, your hardware, and your files. Virus (n.) Code written with the express intention of replicating itself. A virus attempts to spread from computer to computer by attaching itself to a host program. It may damage hardware, software, or information. Just as human viruses range in severity from Ebola to the 24-hour flu, computer viruses range from the mildly annoying to the downright destructive. The good news is that a true virus does not spread without human action to move it along,
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