A Solution to the CIA’s Kryptos Code Is Found after 35 Years
by ScientificamericanPublished October 17, 2025Last updated October 23, 2026

The resolution of the Kryptos code, a cryptographic puzzle embedded in a sculpture at CIA headquarters, has captivated codebreakers and enthusiasts for over three decades. The code, which consists of four sections, has remained partially unsolved since its installation in 1990, with the final section eluding even the most skilled cryptographers. The recent breakthrough by two writers, who meticulously analyzed the cipher, not only unveils the hidden message but also highlights the enduring intrigue surrounding cryptography and its implications for national security and intelligence operations.
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