While some pranksters created virus-like programs for large computer systems, it was really the introduction of the personal computer that brought computer viruses to the public's attention. But it took a few decades before programmers known as hackers began to build computer viruses. The computer industry wasn't even a decade old, and already someone had figured out how to throw a monkey wrench into the figurative gears. In fact, in 1949, a scientist named John von Neumann theorized that a self-replicated program was possible. Computer viruses are just one kind of online threat, but they're arguably the best known of the bunch.Ĭomputer viruses have been around for many years. But the concern is understandable - according to Consumer Reports, computer viruses helped contribute to $8.5 billion in consumer losses in 2008. If you've never had a machine fall victim to a computer virus, you may wonder what the fuss is about. Some can wipe out the information on a hard drive, tie up traffic on a computer network for hours, turn an innocent machine into a zombie and replicate and send themselves to other computers.
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