Craig Heffner is a Vulnerability Researcher with Tactical Network Solutions in Columbia, MD. He has 6 years experience analyzing wireless and embedded systems and operates the devttys0 blog which is dedicated to embedded hacking topics. He has presented at events such as Black Hat and DEF CON and teaches embedded device exploitation courses. His skin has never been exposed to sunlight and is bioluminescent at 200 meters (656 feet) below sea level.