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🚨 Prysm Bug Hits Ethereum Validators Hard After Fusaka Upgrade 💸 Over $1 Million Lost in Missed ETH Rewards Ethereum validators running the Prysm consensus client missed out on 382 ETH — worth over $1 million — after a software bug caused major disruptions following the Fusaka upgrade. ⚙️ What Went Wrong? According to Offchain Labs, the team behind Prysm, a resource exhaustion bug caused delays in validator requests on December 4. This led to: Missed blocks Missed attestations Validators falling out of sync The issue stemmed from a previously introduced bug that only surfaced on mainnet after Fusaka went live. 📉 Network Impact in Numbers The disruption resulted in: 41 missed epochs 248 missed blocks out of 1,344 slots 18.5% missed slot rate Network participation dropping to 75% 🛠️ Fixes and Mitigation While a temporary fix reduced immediate damage, Prysm has now rolled out permanent updates to its attestation validation logic to prevent similar failures in the future. ⚠️ Client Diversity Back in the Spotlight The incident has reignited concerns over Ethereum’s client concentration risk. Offchain Labs warned that if Prysm had controlled a larger share of validators: More than ⅓ could have caused loss of finality More than ⅔ could have finalized an invalid chain Fortunately, Ethereum’s client diversity limited the broader impact. 📊 Current Client Distribution Lighthouse: 51.39% Prysm: 19.06% Teku: 13.71% Nimbus: 9.25% With Lighthouse nearing risk thresholds, developers are once again urging validators to switch to alternative clients to strengthen network resilience. 🔍 The Bigger Picture This event serves as a powerful reminder: Client diversity isn’t optional — it’s essential for Ethereum’s security. 🔥 Hashtags #Ethereum #ETHValidators #BlockchainSecurity #CryptoInfrastructure #Web3 $ETH $BNB $SOL
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