tl;dr

1inch, a DeFi aggregator, experienced a $5 million exploit in its resolver smart contract, resulting in significant losses. The attack targeted outdated Fusion v1 framework resolvers, draining approximately 2.4 million USDC and 1,276 Wrapped Ethereum. 1inch confirmed the breach and assured users tha...

1inch DeFi aggregator suffers $5 million exploit in outdated smart contract
1inch, a DeFi aggregator, experienced a $5 million exploit in its resolver smart contract, resulting in significant losses. The attack targeted outdated Fusion v1 framework resolvers, draining approximately 2.4 million USDC and 1,276 Wrapped Ethereum.
1inch confirms breach, launches efforts to assist impacted resolvers
1INCH CONFIRMS BREACH
1inch acknowledged the exploit, stating that the vulnerability was discovered in certain resolver smart contracts a day earlier. The team confirmed that only resolver contracts running the obsolete Fusion v1 implementation were impacted. They reassured users that their funds remained secure, with losses limited to affected resolvers. Following the incident, 1inch launched efforts to assist impacted resolvers in securing their systems. The platform also urged all resolvers to audit and update their contracts to prevent further attacks. Despite these setbacks, 1inch remains a dominant player in the DeFi sector, according to Messari’s latest report . The report noted that 1inch facilitated 38.2% of all DEX volume routed through aggregators on supported blockchains during the fourth quarter of 2024.

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 12 Mar 25
 12 Mar 25
 12 Mar 25