Zcash (ZEC)

🛡️ Zcash temporarily suspends the Orchard shielded pool after detecting a critical vulnerability Zcash developers activated an emergency update and temporarily suspended transactions in the Orchard shielded pool after identifying a critical vulnerability in the zero-knowledge proof circuit. The flaw, detected on May 29, 2026 during an independent audit, could have allowed invalid state transitions within the shielded pool. 🔧 Technical response from the team The Zcash Foundation deployed the Zebra 4.5.3 update (which temporarily disabled Orchard) and Zebra 5.0.0 (NU6.2) to fix the protocol. Developers confirmed that no active exploit, unauthorized fund creation, or user privacy breaches were detected. The network experienced a brief period of instability while miners and nodes adopted the new consensus rules. Some explorers showed temporary discrepancies of up to four hours, causing some confusion in the community. 📊 Market reaction ZEC showed volatility after the news broke, trading between $599 and $637 over the past 24 hours. Currently, the asset hovers around $614. The Zcash Foundation expects most nodes and miners to adopt version NU6.2 in the coming days to fully consolidate the new consensus. 🔍 In summary Zcash temporarily suspended its Orchard shielded pool after discovering a critical vulnerability related to its zero-knowledge proof circuit. Developers implemented an emergency update in two phases (Zebra 4.5.3 and Zebra 5.0.0) and confirmed there was no loss of funds or privacy leaks. The incident again highlights the importance of continuous audits and security in privacy-focused protocols. ⚠️ Important notice: This information is based on the official report from the Zcash Foundation and market data as of June 2, 2026. It does not constitute investment advice. Always perform your own analysis before making any decisions.

Full analysis of Zcash's emergency update to fix the bug in Orchard and the brief network instability here 👇 https://t.co/CgQZJtpan8

ICYMI, @Zcash pushed an emergency protocol upgrade June 1–2 to close a critical bug affecting the Orchard shielded pool. There was brief turbulence on-chain, but the network is now back to normal. Timeline (in order): - Before June 1: a routine security audit from @zodl_app found a vulnerability in Orchard, Zcash’s newest privacy layer, affecting more than 4.5 million ZEC (about 30% of supply). There is no evidence of exploitation. - June 1, around 22:30 EDT: a coordinated soft fork and protocol upgrade was initiated to deploy the fix safely. - June 2, around 02:00 UTC (around block 3,363,426): emergency rules were activated; miners temporarily stopped including Orchard transactions to reduce transition risk. - Impact: more than 4 hours of degraded block production, including a period with no new blocks, plus some forks and orphaned blocks as upgrades propagated unevenly. - June 2, around 14:00 EDT: Orchard transactions were re-enabled after the patch was deployed. - Early June 3: the chain returned to