http://g7ejphhubv5idbbu3hb3wawrs5adw7tkx7yjabnf65xtzztgg4hcsqqd.onion/html/defcon-23/dc-23-workshops-schedule.html
He has completed several unique penetration testing services during his career of more than 15 years. His current research is based on securing IMS/UC services, IPTV systems, attacking mobile VoIP clients, VoIP service level vulnerabilities, SaaS, mobility security testing, hardware hacking and MDM analysis.