Joe 'clymb3r' Bialek (@JosephBialek) is currently a Security Engineer on the MSRC REACT team at Microsoft where he helps find, triage, and fix security issues in all Microsoft products. Prior to MSRC, Joe spent several years as a network penetration tester focused primarily on attacking Windows domains. Joe has created numerous post-exploitation PowerShell scripts and is a contributor to the PowerSploit project. Joe was also a contributor to both Microsoft Pass-the-Hash papers. He maintains a blog at clymb3r.wordpress.com and can be found on twitter @JosephBialek.