Herbert Bos is a professor of Systems and Network Security at Vrije Universiteit Amsterdam in the Netherlands. Coming from a systems background, he drifted into security a few years ago and never left. Even so, he still does not understand crypto, and hides this by saying that he prefers to stay on the systems' side of security. He obtained a Ph.D. from Cambridge University Computer Laboratory (UK) and is very proud of his (ex-)students.