Editing Venona project (section)

===Donald Maclean and Guy Burgess===
{{More|Donald Maclean (spy){{!}}Donald Maclean|Guy Burgess}}
[[Kim Philby]] had access to CIA and FBI files, and more damaging, access to Venona Project briefings. When Philby learned of Venona in 1949, he obtained advance warning that his fellow Soviet spy Donald Maclean was in danger of being exposed. The FBI told Philby about an agent cryptonymed "Homer", whose 1945 message to Moscow had been decoded. As it had been sent from New York and had its origins in the British Embassy in Washington, Philby, who would not have known Maclean's cryptonym, deduced the sender's identity.<ref>Philipps, Roland. 2018. ''A Spy Named Orphan: The Enigma of Donald Maclean.'' New York: W.W. Norton & Company.</ref> By early 1951, Philby knew US intelligence would soon also conclude Maclean was the sender and advised Moscow to extract Maclean. This led to Maclean and Guy Burgess' flight in May 1951 to Moscow, where they lived the remainder of their lives.{{sfn|Modin|1994|pp=190–199}}