Alexandre De Oliveira is an engineer in Telecom and Network security. He works especially on the exposure of telecom core network over Internet, harvesting information through proprietary protocols presents on telecom networks. Working at P1 Security since 2012, focusing mainly on SS7/SIGTRAN, OAM proprietary protocols and LTE protocols, he also takes part in on-site pentests, audits missions, trainings and Telecom MBSS on large ISP networks. Alexandre is part of the Hackito Ergo Sum (Paris) conference main organizers.