Fyodor authored the open source Nmap Security Scanner in 1997 and continues to coordinate its development. He also maintains the Insecure.Org, Nmap.Org, SecLists.Org, and SecTools.Org security resource sites and has authored seminal papers on remote operating system detection and stealth port scanning. He is a founding member of the Honeynet project, former president of Computer Professionals for Social Responsibility (CPSR), and author or co-author of the books "Nmap Network Scanning", "Know Your Enemy: Honeynets" and "Stealing the Network: How to Own a Continent"