Alexandre De Oliveira is Telecom and Network security engeneer. He works especially on the exposure of telecom core network over Internet, harvesting information through proprietary protocols presents on Core Telecom networks. Working at P1 Security since mid 2012, focusing mainly on SS7/SIGTRAN, OAM proprietary protocols and LTE protocols, he also leads on-site pentests, audits missions, trainings and Telecom MBSS on large ISP networks. Alexandre is also part of the Hackito Ergo Sum conference main organizers and was trainer at Hack In The Box 2013 & 2014 about telecom security.