Cris Thomas (also known as Space Rogue) is an American cybersecurity researcher and white hat hacker. A founding member and researcher at the high-profile hacker security think tank L0pht Heavy Industries, Thomas was one of seven L0pht members who testified before the U.S. Senate Committee on Governmental Affairs (1999) on the topic of government and homeland computer security, specifically warning of internet vulnerabilities and claiming that the group could "take down the internet within 30 minutes".