has been working on the Nmap security scanner and its associated tools for several years. He wrote the Ndiff scan comparison utility and has been active in the maintenance and enhancement of the Ncat network tool and the Zenmap GUI, as well as certain subsystems of Nmap such as the scripting engine. Much of his time has been spent improving Nmap's performance and accuracy. He has spoken previously about Nmap at the FOSDEM and LinuxTag conferences.