Tarjei Mandt (@kernelpool) is a senior security researcher at Azimuth Security. He holds a Master's degree in Information Security from GUC (Norway) and has spoken at security conferences such as Black Hat USA, CanSecWest, INFILTRATE, RECon, SyScan, and Hack in the Box. In his free time, he enjoys spending countless hours challenging security mechanisms and researching intricate issues in low-level system components. Previously, he has discovered several Windows kernel vulnerabilities, and spoken on topics such as kernel pool exploitation and user-mode callback attacks. More recently, he has focused on Apple technology and presented on various security flaws and weaknesses in Mac OS X and iOS.