Christine Abernathy and Teddy Reed guide us through the lesser known parts of designing security software: building community trust, managing build & deployment, dogfooding, and empathy. Almost one year ago, Facebook released osquery, an open source Linux and OS X host-based intrusion detection tool. Since then, the Mac & Linux security communities offered an immeasurable amount of support and guidance. The project has delivered an amazing impact for many companies, including Facebook, thanks to these efforts. Great software is more than code. GitHub Universe serves as a showcase for how people work together to solve the hard problems of developing software. For more information on GitHub Universe, check the website: http://githubuniverse.com