David is a Computer Science graduate who sort of fell into the security world about 15 years ago when system administration got too boring. In past roles, he has built tools for supporting vulnerability and penetration tests, including findings databases and a crazy multi-user GUI report editor. David joined Intrepidus Group last summer, where he's performed penetration testing, mobile app reverse engineering, web application security reviews. Most recently, he has focused on iOS, including extensive support for large enterprise deployments, and research into various security related issues. David describes himself first and foremost as a "guerilla programmer," writing quick-and-dirty tools to process data, eliminate repetitive drudgery, and generally do nifty things. When he has time, he also likes to Geocache, tinker with his home network, and solve crypto puzzle contests at security cons. David almost never blogs to www.darthnull.org.