A Napoleonic cipher — 1,300 coded symbols that stumped historians for two centuries — was cracked in six hours by an AI. The letter turned out to be a secret troop briefing from March 1809.
October 8, 2026 · Weird News
A Napoleonic cipher — 1,300 coded symbols that stumped historians for two centuries — was cracked in six hours by an AI. The letter turned out to be a secret troop briefing from March 1809.