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Oligomorphic code

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This is an old revision of this page, as edited by Enchanter (talk | contribs) at 00:54, 29 January 2006 (rephrase intro). The present address (URL) is a permanent link to this revision, which may differ significantly from the current revision.

An oligomorphic virus is a computer virus that can change its encryptor but not the code base that's being encrypted. This is unlike a "polymorphic" virus that can change both the encryptor and the code base being encrypted or a "metamorphic" virus that can not only change the encryptor and the code base but the payload being delivered too.