LayerOne is a technology conference and social event that is held in Los Angeles. They cover various aspects of computer security. http://www.layerone.info/
Security Forum was created to bring together industry professionals to present and discuss information security challenges and solutions. http://www.infosecbc.org/sf/
Yearly international conference on computer safety, reliability and security, held in September. Includes proceedings of past conferences, conference journals, links, schedule, venue information, call for papers, and contact information. http://www.dcs.ed.ac.uk/home/safecomp/