Krzysztof Kotowicz is a Web security researcher specialized in the discovery and exploitation of HTML5 vulnerabilities. He is the author of multiple recognized HTML5/UI redressing attack vectors. Speaker at international IT security conferences & meetings (SecurityByte, HackPra, Hack In Paris, CONFidence). Works as IT security consultant with SecuRing and IT security trainer with Niebezpiecznik.pl. Author of the "Hacking HTML5" training program. Takes part in multiple Security Bug Bounty programs (Google Security Bug Bounty, Facebook White Hat, Piwik Security Bug Bounty).