Stephen Sims is an experienced vulnerability researcher and exploit developer, having discovered and privately disclosed many vulnerabilities affecting well-known browsers and OS kernels. He is co-author of the popular Gray Hat Hacking book series through McGraw-Hill, now in its 6th edition. He is a Fellow Instructor with the SANS Institute and author of some of their most advanced content covering exploit development and other offensive operations and security related topics. Stephen also runs the Off By One Security channel on YouTube, where he teaches offensive-related material, bringing on a wide variety of experts on to provide free training to the community.