Paul Stone is a principal consultant for Context Information Security in the UK where he performs security research, penetration testing, and tool development. He has a focus on web application and browser security and has reported a number of vulnerabilities in the major web browsers including Chrome, Internet Explorer, Firefox, and Safari. He has previously spoken at Black Hat USA and Black Hat Europe, presenting the well-received 'Pixel-Perfect Timing Attacks' and 'Next Generation Clickjacking' talks.