Russ Housley is the first chair of the IETF with a particular expertise in network security. Housley, who runs consulting firm Vigil Security, has been active in the IETF for nearly 20 years and helped write early e-mail security and public key infrastructure standards. Three months into his job as chair of the leading Internet standards body, Housley talked with Network World National Correspondent Carolyn Duffy Marsan about his strategy for bolting better security onto the freewheeling Internet.