CIA snooped on Senate staffers investigating CIA torture practices.
The review board concluded there was simply a misunderstanding, that the CIA believed it could search the computers being used by staffers of the Senate Select Committee on Intelligence. … The review said that the CIA’s position was that it had “obligations under the National Security Act” and a legal duty to scour the computers “for the presence of Agency documents to which SSCI staff should not have access.”
Source: Shocking: CIA clears CIA in Senate hacking brouhaha | Ars Technica