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Critical Zcash Vulnerability Found and Fixed - Schneier on Security
If you’re a user—owner?—of this cryptocurrency, this is important: 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 found one fast enough to be embarrassing. The Orchard pool is the newest and most advanced shielded transaction system in the cryptocurrency Zcash. Introduced in 2022, it allows users to send and receive ZEC while keeping transaction details private. It uses zero-knowledge proofs to validate transactions without revealing amounts or participants. The bug: a specific check that was supposed to validate transaction inputs wasn’t actually enforcing the rules it appeared to enforce. An attacker could have exploited the flaw to feed false inputs into that check and generate ZEC from nothing, with the zero-knowledge proof system blessing the fraudulent transaction as valid...
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decrypt.co
Zcash Bug Crisis Shows Privacy Cuts Both Ways, Experts Say - Decrypt
Fallout from a bug that enabled undetectable Zcash counterfeiting shows that privacy can sometimes present tradeoffs, experts say.
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cryptobriefing.com
Zcash faces governance concerns after emergency hard fork over critical vulnerability
Zcash's emergency hard fork patched a critical Orchard vulnerability, but the secretive coordination by three developers raises serious governance concerns.
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coindesk.com
Researcher who found Zcash's bug with AI adds Monero to his audit queue
Taylor Hornby, who uncovered the Orchard flaw that sent Zcash down 38%, says other privacy coins are on his list too.
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Zcash plunges 38% after critical counterfeiting vulnerability disclosure
Zcash dropped 38% after disclosing a four-year-old counterfeiting vulnerability in its Orchard shielded pool. Arthur Hayes exited his entire ZEC position.
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Frontier AI Models Can Find Crypto's Biggest Bugs. Experts Warn the Industry Isn't Ready - Decrypt
The Zcash vulnerability uncovered with help from Anthropic's Claude Opus 4.8 signals a shift in who may discover critical flaws first.
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Winklevoss twins back Zcash following bug scare that tanked ZEC by up to 57%
The Winklevoss twins publicly endorsed Zcash after a critical Orchard pool bug sent ZEC plunging up to 57%. Here's what happened and what it means for
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Security engineer Taylor Hornby adds Monero to audit queue after Zcash bug discovery
Security engineer Taylor Hornby plans to audit Monero after discovering a critical counterfeiting bug in Zcash's Orchard pool using AI-assisted review
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theblock.co
ZEC rebounds 42% as ZODL founder details two-step emergency upgrade
Josh Swihart, founder of ZODL, provided details on how the Zcash team resolved a critical vulnerability in the Orchard shielded pool.
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cryptonomist.ch
Vulnerabilità sicurezza Zcash 2026: bug critico nel pool
Vulnerabilità sicurezza Zcash 2026: bug critico nel pool. Scopri l'impatto sul mercato ZEC, la patch d'emergenza e le rassicurazioni degli esperti.
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AI helps uncover critical vulnerability in Zcash's Orchard shielded pool
A security researcher used AI to find a critical Zcash vulnerability hidden for four years, triggering emergency fixes and a 30-42% ZEC price crash.
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Vulnerabilità Zcash scoperta con AI: bug critico in ZEC
Vulnerabilità Zcash scoperta con AI: il bug critico nel pool Orchard minacciava la supply di ZEC. Scopri la patch e il calo di prezzo.
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cointelegraph.com
Zcash Proposes Ironwood Pool After Orchard Bug
Shielded Labs says Ironwood may show whether excess ZEC ever tries to leave Orchard, while ZEC partially recovered from last week’s sell-off.
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schneier.com
Critical Zcash Vulnerability Found and Fixed - Schneier on Security
If you’re a user—owner?—of this cryptocurrency, this is important: On May 29, the security researcher Taylor Hornby found a critical vulnerability in Zcash Orchard privacy pool…
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AI identifies critical bug in Zcash that could have enabled unlimited counterfeit minting
AI-assisted audit discovers critical Zcash Orchard bug enabling unlimited counterfeit ZEC minting, triggering emergency forks and a 38-50% price crash.
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Zcash's Orchard pool sees 1% withdrawal as counterfeiting bug shakes investor confidence
A whale withdrew roughly 202,000 ZEC from Zcash's Orchard shielded pool as a critical counterfeiting bug disclosure sent ZEC prices tumbling over 50%.