The Art of Deception is about gaining someone's trust by lying to them and then abusing that trust for fun and profit. Hackers use the euphemism "social engineering" and hacker Kevin Mitnick-teacher scenario many test samples. After Mitnick's first dozen examples anyone responsible for organizational security will lose the will to live. This circle can not be squared. Considering Mitnick's reputation as a master hacker, it is ironic that the last point of the attacks by hackers using social engineering are computers. The phone is faster than letters, after all, and have large organizations means dealing with many strangers. Much of Mitnick's security advice sounds practical until you think about implementation, when you realize that more effective security means reducing organizational efficiency - an impossible trade in competitive business. Mitnick shows how easily security breached by trust, but without the believers can not live and work together.