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John Walker, the Navy Spy Who Defined Crypto-Betrayal, Dead at 77

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John Walker Jr.

John Walker Jr. started spying for the Soviets while he was a chief warrant officer in the US Navyto help get out of debt from a failed bar. He kept doing it for 18 years.

This week, the man responsible for what is probably the biggest cryptographic failure in military history died—just a few months before he was due to be released from prison.

From Ars Technica
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