In recent years, most discussions of “cyber” have centered on seemingly unbounded vulnerabilities in everything from email to weapons. Today DARPA programs are starting to create technical solutions that would allow us to “win at cyber” – a future in which we have confidence in our information systems and are able to wield cyber as an operational military capability. This presentation will describe DARPA programs such as High Assurance Cyber Military Systems (creating software that is provably secure), Cyber Grand Challenge (results from the world's first all-machine hacking tournament), Plan X (cyberspace situational awareness for planning military operations in the cyber domain), and Cyber Fault-tolerant Attack Recovery (fault detection and tolerance under cyber attack).