Dennis Lee Montgomery (born 1953) is an American software designer and former medical technician who sold computer programs to federal officials that he claimed would decode secret Al-Qaeda messages hidden in Al Jazeera broadcasts and identify terrorists based on Predator drone videos. A 2010 Playboy investigation called Montgomery "The man who conned the Pentagon", saying he won millions in federal contracts for his supposed terrorist-exposing intelligence software. The software was later reported to have been an elaborate hoax and Montgomery's former lawyer called him a "con artist" and "habitual liar engaged in fraud".