Mary was at one time a Special Assistant to President Clinton, as noted in this story from USIS in 1998:
National Security Advisor Samuel R. Berger announced June 16 the appointment of Mary O'Neil McCarthy as Special Assistant to the President and Senior Director for Intelligence Programs.
Ironic that the man guilty of stealing classified documents by hiding them in his clothes appointed the woman guilty of leaking classified information to the press.
From the NBC News story:
In a rare occurrence, the CIA fired an officer who acknowledged giving classified information to a reporter, NBC News learned Friday.
The leak pertained to stories on the CIA’s rumored secret prisons in Eastern Europe, sources told NBC. The information was allegedly provided to Dana Priest of the Washington Post, who wrote about CIA prisons in November and was awarded a Pulitzer Prize on Monday for her reporting.
Sources said the CIA believes McCarthy had more than a dozen unauthorized contacts with Priest. Information about subjects other than the prisons may have been leaked as well.
Unlike the Valerie Plame "leak", this was a serious breach of security with national implications -- and yet the media and the democrats said not a single word about "finding the leaker", nor are there congratulatory stories in the press about plugging this "leak", as was the case when Libby was indicted.