Joffrey Czarny (Sn0rkY) is a Redteam leader at Medallia, Security researcher and VoIP hacker at night, Ambassador of Happiness and Healthy Living. Since 2001, he is a pentester who has released advisories and tools on VoIP Cisco products, Active Directory and SAP, he spoken at various security-focused conferences Hack.lu, Troopers, ITunderground, Hacktivity, HITB, SSTIC, REcon and Black Hat Arsenal...