Krzysztof Kotowicz is an Information Security Engineer at Google and a panel member of Google's Vulnerability Rewards Program. He's a web security researcher specialized in Javascript, browser extensions and client-side security. Author of multiple open-source pentesting tools, and recognized HTML5/UI redressing attack vectors. Speaker at international IT security conferences & meetings (Black Hat, BruCON, Hack In Paris, CONFidence, SecurityByte, HackPra, OWASP AppSec, Insomni'Hack).