MLT, real name Matthew Telfer, (born 1994) is a cybersecurity researcher, former grey hat computer hacker and former member of TeaMp0isoN. MLT was arrested in May 2012 in relation to his activities within TeaMp0isoN, a computer-hacking group which claimed responsibility for many high-profile attacks, including website vandalism of the United Nations, Facebook, NATO, BlackBerry, T-Mobile USA and several other large sites in addition to high-profile denial-of-service attacks and leaks of confidential data. After his arrest, he reformed his actions and shifted his focus to activities as a white hat cybersecurity specialist. He was the founder of now-defunct Project Insecurity LTD.