A Canadian intelligence operation in the 1980s uncovered a spy passing secrets to Russia, according to new research. A Soviet defector who moved to Britain provided crucial information that helped Canada identify the mole. The defector, Vladimir Kudryashov, shared details about a network of spies operating within Canada. The findings are detailed in a recently published book by journalist Ben Macintyre. The book, titled *Redwood*, explores the defector’s role in exposing the spy. Canadian intelligence officials confirmed the defector’s testimony was instrumental in the investigation. The case remains one of the most significant in Cold War espionage history. The defector’s revelations led to the arrest of several individuals linked to the spy ring. The Canadian government has not commented publicly on the new evidence. The case highlights the complexity of Cold War intelligence operations. The defector’s testimony was corroborated by multiple sources. The spy was identified as a high-ranking official in a Canadian government department. The operation took place during the early 1980s. The defector’s decision to share information with British intelligence was a key turning point. The Canadian intelligence community has since improved its security protocols. The case is still studied by intelligence analysts today. The defector’s story has been widely covered in media outlets. The findings add new depth to the understanding of Cold War espionage. The Canadian government has not released official details about the case. The defector’s role was previously underreported. The new evidence has sparked renewed interest in the case. The spy’s identity was confirmed through cross-referencing with other intelligence reports. The Canadian intelligence agency involved in the case remains unnamed. The defector’s testimony was critical in confirming the spy’s activities. The case is considered a landmark in Cold War intelligence history. The findings are part of a broader effort to declassify Cold War-era documents.