Fotis (@ithilgore) Chantzis is a principal information security engineer at Mayo Clinic, where he manages and conducts technical vulnerability assessments on medical devices and clinical support systems as well as penetretation tests and red team engagements on the network. Fotis has over 10 years of experience in the information security industry, which includes time spent researching network protocol vulnerabilities and developing security tools. He has been a contributor to the Nmap project since 2009, when he wrote the Ncrack network authentication cracking tool, which he still maintains, and has published a video course on “Mastering Nmap”. His research on network security includes exploiting the TCP Persist Timer (published on Phrack #66) and inventing a new stealthy port scanning technique by abusing the popular XMPP. His most recent research focus has been on medical device & IoT security.