Thomas Mackenzie is a security researcher for the InfoSec Institute and the Director of upSploit Limited - a vulnerability management solution aimed at security researchers and vendors alike. During his spare time he consults for various different companies in the area of web application penetration testing and vulnerability/security research.
Mackenzie co-hosted the British podcast Disaster Protocol, which discussed IT security in an informal way. He has spoken at a number of events worldwide including OWASP chapter meetings in England and, most recently, Chicago BSides. Mackenzie is currently developing a number of new open-source services. They will be featured on his blog (http://www.tmacuk.co.uk) and his Twitter account (@tmacuk).