The USENIX Security Symposium brings together researchers, practitioners, system administrators, system programmers, and others interested in the latest advances in the security and privacy of computer systems and networks. The 24th USENIX Security Symposium will be held August 12-14, 2015, in Washington, D.C. All researchers are encouraged to submit papers covering novel and scientifically significant practical works in computer security. The Symposium will span three days, with a technical program including refereed papers, invited talks, posters, panel discussions, and Birds-of-a-Feather sessions. Workshops will precede the Symposium on August 10 and 11. Interested in participating? The complete Call for Papers is now available. You may submit your USENIX Security '15 paper submission for consideration for the Internet Defense Prize as part of the regular submission process.