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Claude Opus Found a Four-Year-Old Hole in Zcash’s Privacy Layer. Nobody Knows If Someone Already Used It.

Securityaffairs.Co •Pierluigi Paganini • June 6, 2026

Claude Opus 4.8 helped uncover a four-year-old critical flaw in Zcash that could have enabled undetectable creation of counterfeit coins. On May 29, the security researcher Taylor Hornby found a critical vulnerability in Zcash Orchard privacy pool using Claude Opus 4.8. The Zcash team hired Hornby specifically to look for this kind of issue. He […]

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AI Discovers Critical Four-Year-Old Flaw in Zcash's Privacy Layer Claude Opus 4.8 identified a four-year-old vulnerability in Zcash that could allow the undetectable creation of counterfeit coins. Discovered by security researcher Taylor Hornby on May 29, the flaw resides in the Zcash Orchard privacy pool. The Zcash team had hired Hornby to specifically investigate such issues. The critical nature of this vulnerability raises concerns about potential exploitation, as it remains unclear if it has already been used maliciously. The discovery highlights the growing role of AI in cybersecurity, with implications for the industry’s response mechanisms. Current protocols are not designed to handle AI-driven findings effectively, creating a gap in response capabilities. This situation poses a significant risk to the cryptocurrency sector, which relies on complex code and privacy features. 2 sources 66

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Zcash