History of Computer Viruses
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The first virus for a computer that gave grief to the unsuspecting public was the 'Elk Cloner', created by high school student and computer programmer Rich Skrenta in 1982. This virus was so designed that it would attach Apple operating system, DOS3.3, and then spread to other computers through floppy disks.
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Skrenta is believed to have created this virus as a joke; he then had the virus put in a game. It was programmed in a way that the virus would become active after the game had been used for the fiftieth time. The user would end up seeing a screen that was blank and then a poem about the virus would appear. This showed that the computer had become infected by the virus.
(c)Brain, the boot sector virus, is the first ever personal computer virus, which programmed by brothers Basit and Amjad Farooq Alvi. Some analysts, however, say that the Ashar virus may have been created before (c)Brain.
The viruses of today made their first appearance in the 1980s, thanks to the increased use of the BBS or Bulletin Board System. Trojan horses spread rapidly, and viruses were being written to victimize the popular ones in the software trade.
Macro viruses made their presence felt in mid 1990s, with a few versions of MS Word actually making way for this virus to spread even faster. Next, internet users were faced with threats while using instant messaging services. Programmers kept coming up with new viruses in all possible forms, and they are being developed and introduced every day.
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