Computer viruses are designed to spread from one computer to another quickly. A virus is “a program or piece of code that is loaded onto your computer without your knowledge and runs against your wishes. Viruses can also replicate themselves. All computer viruses are manmade. Even a simple virus is dangerous because it will quickly use all available memory and bring the system to a halt. An even more dangerous type of virus is one capable of transmitting itself across networks and bypassing security systems.” Some computer viruses don’t do anything malicious — others can wipe out everything on your hard drive.
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