Zcash Founder: Orchard Bug Could Have Been Used to Create Undetectable Counterfeit ZEC

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Zcash disclosed a critical security bug in its Orchard shielded pool that could have allowed unlimited counterfeit ZEC; the flaw dated back to Orchard's May 2022 launch, was discovered May 29 by a researcher and patched with an emergency upgrade on June 2. The disclosure caused ZEC to plunge 33%, prompted a proposed protocol upgrade and emergency fixes, and led trader Arthur Hayes to exit his entire ZEC position, underscoring crypto privacy pool risk and near-term negative pressure on adoption and token price.
- Zcash disclosed a critical Orchard pool bug that could’ve allowed unlimited ZEC creation.
- Researchers found and patched the flaw within days, and a new upgrade was proposed.
- Arthur Hayes exited his entire ZEC position after the disclosure as token tanked 33%.
A major security issue in Zcash’s Orchard shielded pool has triggered a network-wide response after developers confirmed the bug could have allowed unlimited counterfeit ZEC to be created inside the privacy pool.
According to Zcash founder Zooko Wilcox-O’Hearn, the vulnerability was discovered on May 29 by security researcher Taylor Hornby and fixed through an emergency update completed on June 2.
The flaw had been present since Orchard launched in May 2022. Hornby demonstrated a working exploit in a local test environment that generated unlimited counterfeit ZEC while remaining invisible to normal detect…
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