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Cydia Dev Discloses Ethereum L2 Bug — Optimism Attacker Could Have ‘Printed an Arbitrary Quantity of Tokens’

Posted on February 13, 2022 by Dissent

Jamie Redman reports:

On February 10, the well-known developer of Cydia and iOS Jailbreak, Jay Freeman, otherwise known as Saurik, published a Twitter thread about a bug he found in the Layer-2 (L2) scaling protocol known as Optimism. According to Freeman, the vulnerability, which has been patched, could have allowed an attacker to create an infinite amount of tokens.

Read more at Bitcoin.com.

On February 10, Freeman tweeted about the finding and noted, “Last week, I discovered (and reported) a critical bug (which has been fully patched) in @optimismPBC (a “layer 2 scaling solution” for Ethereum) that would have allowed an attacker to print arbitrary quantity of tokens, for which I won a $2,000,042 bounty.” He added: ” will be giving a talk about the bug at @EthereumDenver, Friday, February 18th: 9:40am MST on the Infinity Stage. My talk will be live-streamed, presumably to the #ETHDenver YouTube channel: https://youtube.com/c/ETHDenver Look out for “Attacking an Ethereum L2 with Unbridled Optimism”!”

 

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