50 Years of Mathematical Cryptanalysis Inside the NSA

50 Years of Mathematical Cryptanalysis Inside the NSA

Cryptanalysis - the science of cracking secret codes - has always been an arms race between mathematicians and machine designers. A newly declassified NSA document, titled "Fifty Years of Mathematical Cryptanalysis (1937–1987)", provides a rare and sweeping look at...
The CIA File That Raised a Flag Then Got Buried

The CIA File That Raised a Flag Then Got Buried

Document 206-10001-10000, newly released as part of the 2025 JFK files, is just one page long. It outlines a suspicious disappearance: a Soviet defector scheduled to leave Mexico City who seemingly never did. The CIA flagged the irregularity. Then they closed the...