Mike Shema leads the product security team at Square, where he works with DevOps teams to protect applications, their data, and their users. Mike's experience with appsec includes building web app scanners and consulting across a range of security topics from secure programming to pen testing. He also writes books and blog posts about infosec. His books include Anti-Hacker Tool Kit and Hacking Web Apps. He has taught hacking classes and presented research at conferences around the world.