Zcash (CRYPTO: ZEC) crashed as low as 50% over the past 36 hours after Shielded Labs disclosed a critical vulnerability allowing unlimited counterfeit ZEC creation—a bug sitting undetected for four years until Anthropic's Claude AI found it. Security Engineer Used Claude Opus 4.8 To Find The Bug On May 29 On May 29, Shielded Labs security engineer Taylor Hornby discovered the Orchard circuit vulnerability using Anthropic's newly released Opus 4.8 model and immediately shared findings with engineers at the Zcash Open Development Lab.