The human memory is very volatile and not really trustworthy. Judges, interrogators and scientists know that humans often mix up or straight up create new false memories. In this talk I will show what we know about how the human memory works, which factors lead to a loss of quality of stored memories and how they can be altered or manipulated for social engineering attacks. Since, ethically, this is a very controversial topic, I will also speak about the ethics behind this. And be advised that I will not talk about NLP (Neuro Linguistic Programming), as this stuff is unsubstantiated, unscientific esoteric charlatanry.