Sr. Security Engineer, LinkedIn Tony has been working in the IT industry for nearly 20 years and has been focused on application security for the last 5 years. He is currently a penetration tester for LinkedIn, running point on their mobile security initiatives. Prior to LinkedIn, he has worked for Warner Bros Advanced Digital Services, IBM and AT&T, among others and served 6 years in the U.S. Army Signal Corps. When he's not hacking, he enjoys thinking about astrophysics, travelling the world and has been known to dust his skateboard off from time-to-time.