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