This is a federal contract awarded by the Defense Advanced Research Projects Agency (DARPA) to HRL Laboratories, LLC, a research and development company jointly owned by The Boeing Company and General Motors. The $3,901,204 contract, which does not have a set-aside designation, is for a 4-year project called the Active Social Engineering Defense (ASED) program. The objective is to develop continuously habituating elicitation strategies to defend against social engineering attacks. HRL Laboratories will collaborate with Carnegie Mellon University on aspects of the project, including developing cognitive models of adversarial interaction and integrating them with optimization algorithms. The contract involves both an initial 18-month development phase and an optional 30-month follow-on phase. This contract supports DARPA's research into advanced technologies for cybersecurity and defense against emerging threats.