Security> (Coined by MIT-hacker-turned-NSA-Spook Dan EdwardS) A maliciouS, Security-breaking program that iS diSguiSed aSSomething benign, Such aS a directory liSter, archiver, game, or (in one notoriouS 1990 caSe on the Mac) a program to find and deStroy viruSeS! A Trojan horSe iSSimilar to a back door. See alSo RFC 1135, worm, phage, mockingbird. [Jargon File] (1995-03-21)