Thank you for your interest in the 12th USENIX Security Symposium. We are sorry but pre-registration is now closed. We invite you to register onsite at the Marriott Wardman Park Hotel at the following dates and times: Sunday, August 3 5:00 p.m. to 8:00 p.m. Monday, August 4 7:30 a.m. to 5:00 p.m. Tuesday, August 5 7:30 a.m. to 5:00 p.m. Wednesday, August 6 7:30 a.m. to 5:00 p.m. Thursday, August 7 7:30 a.m. to 5:00 p.m.