A burglar-alarm system for a briefcase and in particular to one which will generate high voltage on the surface of the briefcase to force the thief to throw away the briefcase, giving an alarming sound, emitting brilliant flashes of light, evolving colored smokes to arouse attention of the pedestrians and automatically destroying the articles therein so as to prevent the briefcase from being taken away in case of theft or incorrectly dialing the electronic combination lock in the briefcase.
