A single leaked hint exposed the CIA’s most puzzling code. But dozens of the world’s toughest ciphers are still waiting to be solved.

Koch, J. (2025) Entangled Cyclical Encryption Architecture: The Paradigm Cipher for a Fractured World . Journal of ...

Learn how to implement a classic substitution cipher in C! This step-by-step tutorial walks you through encoding and decoding messages by replacing each letter with another according to a fixed key. A ...

The Island Suspense event in Tears of Themis is something a bit different from most other special events we've seen in the game's five-year history. Following on from the Gladiolus Valley arc, it also ...

Nowadays data breaches aren't rare shocks—they're a weekly drumbeat. From leaked customer records to stolen source code, our digital lives keep spilling into the open. Subscribe to our newsletter for ...

When the IBM PC was new, I served as the president of the San Francisco PC User Group for three years. That’s how I met PCMag’s editorial team, who brought me on board in 1986. In the years since that ...