The CFP for the 5th USENIX Workshop on Offensive Technologies is now available at: http://www.usenix.org/events/woot11/cfp/ Progress in the field of computer security is driven by a symbiotic relationship between our understandings of attack and of defense. The USENIX Workshop on Offensive Technologies (WOOT) aims to bring together researchers and practitioners in systems security to present research advancing the understanding of attacks on operating systems, networks, and applications. Submission topics include but are not limited to: * Vulnerability research (software auditing, reverse engineering) * Penetration testing * Exploit techniques and automation * Network-based attacks (routing, DNS, IDS/IPS/firewall evasion) * Reconnaissance (scanning, software, and hardware fingerprinting) * Malware design and implementation (rootkits, viruses, bots, worms) * Denial-of-service attacks * Web and database security * Weaknesses in deployed systems (VoIP, telephony, wireless, games) * Practical cryptanalysis (hardware, DRM, etc.) WOOT '11 will be held August 8–9, 2011, in San Francisco, CA. WOOT '11 is co-located with the 20th USENIX Security Symposium (USENIX Security '11), which will take place August 10–12, 2011. WOOT this year will feature a Best Paper Award and a Best Student Paper Award. The submission deadline for papers is 11:59 p.m. Pacific time on Monday, May 2, 2011. We look forward to your submissions. David Brumley, Carnegie Mellon University Michal Zalewski, Google