The United States National Security Agency — the country’s premier signals intelligence organisation — recently declassified a Cold War-era document about code-breaking. The 1977 book, written by ...
The United States National Security Agency — the country’s premier signals intelligence organization — recently declassified a Cold War-era document about code-breaking. The first two parts of the ...
If you fancy yourself as a budding sleuth, hacker or code-breaker, GCHQ has released its annual Christmas challenge and is encouraging people to try and crack the puzzle. Featuring designs from ...
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