Kryptos Sculpture Part 4: Decryption & Meaning

Part Four of The Kryptos Sculpture

Two people found the solution. They used the power of research, not cryptanalysis, finding clues amongst the Sanborn papers at the Smithsonian’s Archives of American Art.

This comes as an awkward time, as Sanborn is auctioning off the solution. There were legal threats—I don’t understand their basis—and the solvers are not publishing their solution.

Posted on October 24, 2025 at 7:01 AM
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Sidebar photo of Bruce Schneier by Joe MacInnis.

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