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History of cryptography and cryptanalysis. Questions that wish to ask about the history of cryptography should use this tag; if you're asking about historical ciphers you may also wish to use the classical-cipher tag.

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Have any cryptographic breaks been executed in the real world since World War II?

I'm no cryptographer, but I think the Flame malware matches your description. It's an extremely sophisticated tool for cyber espionage discovered in 2012. Experts believe it was developed by the US an …
Fabio says Reinstate Monica's user avatar