Twitter's director of information security, Bob Lord said the hacking attack on the social networking site "was not the work of amateurs".
This attack was not the work of amateurs, and we do not believe it was an isolated incident. The attackers were extremely sophisticated, and we believe other companies and organizations have also been recently similarly attacked. For that reason we felt that it was important to publicize this attack while we still gather information, and we are helping government and federal law enforcement in their effort to find and prosecute these attackers to make the Internet safer for all users.
More top news
Former X Factor finalist Chris Maloney told This Morning he spent £60,000 on cosmetic surgery after online abuse led to a breakdown.
A photograph appearing to show a seagull flying in formation alongside the Red Arrows display team has gone viral.
Bowers pleaded not guilty of assaulting his ex-fiancee Sophia Cahill in Croydon in January.