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Home Incidents

Base Blockchain Exploited for $1 Million

October 28, 2024
Reading Time: 2 mins read
in Incidents
Base Blockchain Exploited for $1 Million

An exploit on the Base blockchain has resulted in the theft of approximately $1 million, raising significant security concerns within the decentralized finance (DeFi) community. According to a report by blockchain security firm Cyvers Alerts on October 25, the attacker took advantage of vulnerabilities associated with unverified lending contracts. By manipulating the price of Wrapped Ether (WETH) through flawed smart contracts, the attacker siphoned off nearly $994,000 in a single transaction. This incident serves as a stark reminder of the risks associated with unverified contracts in the DeFi space.

The attack unfolded over several hours, showcasing the sophistication of the exploit. After executing the initial suspicious transaction, the attacker quickly transferred the majority of the stolen funds to the Ethereum network. Additionally, they funneled $202,549 into Tornado Cash, a privacy-centric service designed to obfuscate transaction trails. The attacker’s ability to execute a price manipulation exploit highlights the vulnerabilities inherent in the current DeFi infrastructure, where oversight and security measures can often be insufficient.

Hakan Unal, senior SOC lead at Cyvers Alerts, explained that the oracle used by these lending contracts was not robust enough. It relied solely on a single trading pair with limited liquidity of around $400,000, making it highly susceptible to price swings and manipulation. Unal emphasized the need for a more diversified oracle system with higher liquidity to mitigate such risks, particularly for assets like WETH. This incident underscores the critical importance of robust security measures and due diligence when implementing lending contracts within the DeFi ecosystem.

As the investigation continues, responsibility for the exploit appears to lie with the entity managing the unverified lending contracts, as well as those who chose an insecure oracle for price verification. The attacker remains unidentified and has successfully escaped with the stolen funds. This incident serves as a crucial wake-up call for DeFi platforms to enhance their security protocols and ensure thorough contract verification processes to protect user funds from similar attacks in the future. With the growing prevalence of such exploits, the industry must prioritize security to maintain user trust and protect the integrity of decentralized finance.

Reference:

  • Our system detected multiple suspicious transactions involving unverified lending contracts on #Base a few hours ago
Tags: BaseBlockchainCryptocurrenciescyber incidentsCyber Incidents 2024Cyber threatsDecentralized FinanceETHEthereumOctober 2024
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