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Viruses and Anti-Virus

Viruses and Worms  • Virus:  A program or   that is loaded onto your computer without your knowledge and runs against your wishes. needed a human action to spread infection.  Can delete important  files, format hard disk, take up system resources that will cause system crash or shutdown.  • Worms:  A program that replicates itself over a computer network and usually performs malicious actions. Replicates itself automatically. – Can infect computers by Spyware, Malware, and Email. What is a virus ?  A virus is a piece of computer code that attaches itself to a program or a file so it can spread from computer to others computer. It infects as it travels. Viruses can damage your software, your hardware, and your files . • Virus (n.)  Code written with the express intention to replicate itself. A virus attaches itself to a host program and then attempts to spread from computer to computer. It might damage hardware, software, or information W...
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Signs of viruses: Are you infected?

Signs of viruses: Are you infected? A program or attachment on your computer, you might not realize that you've introduced a virus until you notice something isn't quite right  • After you open and run an infecte. • Here are a few primary indicators that your computer might be infected:  • Your computer runs more slowly than normal  • Your computer stops responding or lock ups often. • Your computer crashes and restarts every few minutes  • Your computer restarts on its own and then fails to run normally  • Applications on your computer don't work correctly  • Disks or disk drives are inaccessible • You can't print correctly  • You see unusual error messages  • You see distorted menus and dialog boxes Steps to help remove a virus:  • 1.Visit Microsoft Update and install the latest updates. 2.If you currently use antivirus software, visit the manufacturer's Web site, update your software, and then perform a thorough scan of your computer. If y...
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Who Creates Viruses ?

Who Creates Viruses?  • Where do viruses come from? Every virus is created by an author with a different motive—but all virus builders feel their actions are justified. For some, a killer virus is the ultimate technical challenge, like climbing a mountain. For others, creating viruses is a form of self-expression. Some disgruntled employees, consumers or citizens turn to   virus building as revenge for perceived injustices. What Do Viruses Do?  • Today’s viruses are far more potent than the beginner versions we saw several decades ago. Viruses may be sent by opening email attachments, clicking on spam, visiting corrupt websites and links online, opening spreadsheets or even the original method— infected disks. But the Internet is now the superhighway for virus transmission. What Should I do if I have a Virus?  • Clean your computer with anti-virus software. If your computer is still not functioning and you have data you are concerned about recovering, ...
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