Xavier Mertens, is a freelance cyber security consultant based in Belgium. His daily job focuses on protecting his customer’s assets by applying “offensive” (pentesting) as well as “defensive” security (incident handling, forensics, log management, SIEM, security visualisation, OSINT). Besides his daily job, Xavier is also a security blogger (https://blog.rootshell.be), an ISC SANS handler (https://isc.sans.edu) and co-organizer of the BruCON (http://www.brucon.org) security conference.