A National Security Agency memo alleges that Edward Snowden swiped a co-worker's password in order to gain access to top secret documents. That civilian NSA employee has since resigned.

The memo, which NBC News obtained also mentions two other workers losing privileged access to classified information, one an active U.S. military member and the other a contractor.

Neither were fired because they don't work directly for the NSA, so the job security is in the hands of their employers.

The memo outlines the agency's investigation into the security breach that let Snowden make off with classified information. It was sent to congressional intelligence and judiciary committees recently.

The New York Times reports that the memo seems to suggest that the blame is being placed on lower level employees and none on more senior NSA officials.

The only change coming appears to be the NSA director, Gen. Keith B. Alexander, retiring in March. NSA oversight organization, office of the director of national intelligence, director, James R. Clapper Jr. has found himself being criticized for the slow response to the breach, but so far does not appear about to lose his job.

Despite previous comments from Snowden where he has denied stealing anyone's password, the memo claims that "Mr. Snowden was able to capture the password, allowing him even greater access to classified information."

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