Phil Purviance is an Application Security Consultant for AppSec Consulting where he researches application security vulnerabilities and performs penetration testing. Phil's body of work includes the discovery and proof-of-concept exploitations of critical security vulnerabilities, design flaws, and system weaknesses in hundreds of custom web sites and web application frameworks. Purviance also consults with clients and recommends helpful countermeasures that are useful to mitigate serious security vulnerabilities. Phil's recent exploit talks include the security of HTML5, and the revealing of cross-site scripting vulnerabilities in Skype for iOS. Phil's contributions to the security community have earned him a placement into both the Google and Facebook Security Hall of Fame.