Phone based denial-of-service (DoS) attack on MI6 Anti-terrorism Agency. Hacking group, ‘TeaMp0isoN’ said they targeted counter-terrorism officers at MI6 with a barrage of phone calls for a period of 24 hours. Everytime they picked up the phone the server would play a robot voice which said ‘teamp0ison’ It said the attacks were motivated by the recent decision at the European Court of Human Rights that said Babar Ahmad, Adel Abdel and other suspected terrorists could be extradited to the United States.
Source: https://thehackernews.com/2012/04/phone-based-denial-of-service-dos.html