As telecom security researcher, Alexandre De Oliveira is part of the POST.lu CSE Red Team. Previously coming from P1 Security were he provided security expertise around SS7/SIGTRAN and LTE technologies and infrastructures for major telecom networks, he has always been looking for new security challenges around unknown & proprietary technologies that telecom networks cherish so much. Speaker at different conferences about telecom security, Alexandre has been part of the SS7map project, presented at the 31C3, and he also talked about Worldwide SS7/SIGTRAN security flows during Hackito Ergo Sum 2014. He started since 2014 giving telecom security training for private corps and during international conferences (HITB, HITB GSEC).