After the fall of the Soviet Union, some of Philby's postwar professional papers for the KGB became available in Moscow. They were mainly proposals...for the disruption of the CIA, the SIS, and the NATO intelligence services. In these papers the word disruption is a constant theme, with other related professional intelligence terms... But it is the use of disruption that is most striking. The word does not appear at all in The International Dictionary of Intelligence, which has its origins in the CIA's terminology. 
...
     Philby touched nothing which he did not destroy--from within--while Russia, which alone he served, he did not touch.
(emphasis in original)

Treason in the Blood, Anthony Cave Brown (1994), p.307, and, p.308, quoting H.R. Trevor-Roper, The Philby Affair (1968) p.35.