Ethereum validators running the Prysm consensus client lost around 382 ETH ($1.18 million) after a bug resulted in delays that caused validators to miss blocks and attestations. Though the bug had been introduced around a month prior, it did not affect validators until Ethereum completed its “Fusaka” network update on December 3. Around 19% of Ethereum validators use the Prysm consensus client, which is developed by Offchain Labs.

Total loss estimated at $1,180,000.