computer virus

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and viruses were written to infect popularly traded software. Shareware and bootleg software were equally common vectors for viruses on BBS’s. Within the “pirate scene” of hobbyists trading illicit copies of retail software, traders in a hurry to obtain the latest applications were easy targets for viruses.

Macro viruses have become common since the mid-1990s. Most of these viruses are written in the scripting languages for Microsoft programs such as Word and Excel and spread throughout Microsoft Office by infecting documents and spreadsheets. Since Word and Excel were also available for Mac OS, most could also spread to Macintosh computers. Although most of these viruses did not have the ability to send infected e-mail, those viruses which did took advantage of the Microsoft Outlook COM interface. Some old versions of Microsoft Word allow macros to replicate

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