![]() The first IBM PC compatible "in the wild" computer virus, and one of the first real widespread infections, was " Brain" in 1986. ![]() Cohen used the term "computer virus" to describe programs that: "affect other computer programs by modifying them in such a way as to include a (possibly evolved) copy of itself." (note that a more recent definition of computer virus has been given by the Hungarian security researcher Péter Szőr: "a code that recursively replicates a possibly evolved copy of itself"). In 1983, the term "computer virus" was coined by Fred Cohen in one of the first ever published academic papers on computer viruses. ![]() The first known that appeared "in the wild" was " Elk Cloner", in 1981, which infected Apple II computers. The Creeper virus was followed by several other viruses. Some people consider "The Reaper" the first antivirus software ever written – it may be the case, but it is important to note that the Reaper was actually a virus itself specifically designed to remove the Creeper virus. The Creeper virus was eventually deleted by a program created by Ray Tomlinson and known as " The Reaper". This computer virus infected Digital Equipment Corporation's ( DEC) PDP-10 mainframe computers running the TENEX operating system. See also: Timeline of notable computer viruses and worms 1949–1980 period (pre-antivirus days) Īlthough the roots of the computer virus date back as early as 1949, when the Hungarian scientist John von Neumann published the "Theory of self-reproducing automata", the first known computer virus appeared in 1971 and was dubbed the " Creeper virus".
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