On June 5, 2026, Zcash fell 30 to 50 percent in a single day. The trigger was the kind of disclosure privacy-coin holders dread. A flaw had been sitting in Zcash's shielded transaction circuit since May 2022, and for those four years it could have let someone mint counterfeit ZEC that nobody would ever see. The bug was real. Security researcher Taylor Hornby found it with help from Anthropic's Opus 4.8 model, built a working exploit in a local test, and reported it privately. Developers shipp...

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