The memo from an unnamed lawyer discusses a meeting on January 13 2014 when Mr Brennan was briefed on CIA efforts to hack into a computer used by Senate staff on the Intelligence Committee. The lawyer wrote: 'I informed the Director of my view that the conduct in question could be criminal.' Another memo says: 'At 5:30 pm on January 16, I was asked to come to the Director's office. He said he appreciated my advice, fully supported all my actions in this matter, and urged me to be proactive in coming to him with future concerns.' 

Proved wrong

Two months later the CIA was accused of monitoring the Committee in secret and Mr Brennan said: 'When the facts come out on this, I think a lot of people who are claiming that there has been this tremendous sort of spying and monitoring and hacking will be proved wrong.' However, the lawyer's notes suggest that he would have been well aware of what was happening. Source: The Atlantic