Optimism upgraded its testnet on April 25, according to Offchain Labs.
Offchain Labs, Optimism’s rival, noted that these are challenging difficulties.
At least two weeks after discovering them, the Layer 2 network Optimism patched two serious vulnerabilities on its testnet. Optimism upgraded its testnet on April 25, according to Offchain Labs, who discovered the vulnerabilities on Friday. A software company warned that malicious actors might change the chain’s history and perform other “subtle attacks” because of the since-fixed security weaknesses.
Optimism was notified by Offchain Labs on March 22 of two testnet issues: first, that the OP Stack fraud-proof mechanism might be tricked into accepting a false chain history; and second, that an exploiter may be able to prevent it from accepting a valid chain history.
Challenging Difficulties
Offchain Labs, Optimism’s rival, noted in the statement that these are challenging difficulties. Protocols that are immune to
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