Ethereum staking protocol Lido remains “fully secure and operational” after an attacker compromised one of its protocol reporting oracles, draining nearly 1.5 ETH and sparking an emergency DAO vote to rotate the oracle’s address.
Chorus One, which operates the oracle, said the attack appears to be an “isolated incident” without further threats to the protocol. “We have thoroughly audited our entire infrastructure and found no evidence of any broader compromise,” Chorus One wrote on X.
The attacker drained 1.46 ETH worth about $3,800 from the compromised address, blockchain data shows. “Investigation on all fronts is still ongoing; we will share a full postmortem after we conclude the investigation,” Chorus One added on Lido’s governance forum. “Activity of the exploiter points towards an automated system, rather than a targeted attack.”
Though the attacker was able to drain the oracle address’s ETH balance (which was purposely held at a low level, Chorus One said), the attack didn’t threaten Lido’s operations, as its protocol reporting oracles require a 5-of-9 consensus.
“In the worst case, [compromised oracles] may mean something like stETH rebases (whether positive or negative) take longer to materialize, which will affect stETH holders but mostly in a negligible manner apart from those who may be using stETH in a leveraged manner in DeFi,” wrote Lido head of validators Izzy on X.
© 2025 The Block. All Rights Reserved. This article is provided for informational purposes only. It is not offered or intended to be used as legal, tax, investment, financial, or other advice.
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