In 1961, Anatoliy Golitsyn, a major in the KGB, was assigned to the embassy in Helsinki, Finland, under the name "Ivan Klimov."
Golitsyn's defection so alarmed the KGB that orders were sent out to cancel all meetings with field agents out of fear that they would be identified.
[1] Golitsyn was flown to the US and interviewed by David Murphy, the head of the CIA's Soviet Russia Division.
Considering him to be unreliable, Murphy passed him on to James Jesus Angleton, the CIA's director of counterintelligence.
employees who have been accused unfairly of disloyalty (e.g. Sasha) and who have had their careers subsequently ruined were allowed to receive government compensation.