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Hour 11. Finding Programs and Files > Watching Out for Viruses

Watching Out for Viruses

A few years back, in the movie Independence Day, Jeff Goldblum stopped an intergalactic invasion by uploading a computer virus into the aliens' mothership and thereby scrambling the alien system.

Computer virus. Program code secretly added to or attached to a file or email message that makes mischief when the file or message is opened. Often, the virus is designed to reproduce and spread itself from the file it travels in—its host file—to other files.


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