Aperture Finance Loses $3.67M in Exploit, Hacker Deposits Funds Through Tornado Cash

TheNewsCryptoPublished on 2026-02-05Last updated on 2026-02-05

Abstract

Aperture Finance suffered a security breach on January 25, 2026, resulting in a loss of approximately $3.67 million. The exploit targeted specific versions of its smart contracts (V3 and V4), allowing the hacker to steal funds by exploiting vulnerabilities in contract approvals and function calls. The attacker subsequently deposited 1,242.7 ETH (worth around $2.4 million) into Tornado Cash, likely to obscure the transaction trail. In response, Aperture Finance disabled affected web app functions, released a security analysis, and urged users to revoke all related ERC-20 and ERC-721 approvals connected to the compromised addresses.

Aperture Finance suffered a security breach in specific versions of smart contracts, that results in a loss of around $3.67 million. On February 5, the Blockchain security firm PeckShieldAlert showed that the addresses believed to be the hackers had deposited 1,242.7 ETH into Tornado Cash, raising concerns.

Basically, the hack of Aperture Finance happened on January 25, 2026, as its security incident analysis reported that the exploit targeted smart contracts including V3 and V4. Aperture Finance is a DeFi platform that allows users to frequently shift their ERC-20 tokens or liquidity position NFTs, so that trades and strategies can be executed automatically.

However, in this case, the exploiter identified a problem in how the contract handled approvals and function calls. By which the hacker took advantage of these and stole the funds from the contracts.

Exploiter Moves $2.4M ETH to Tornado Cash

As this exploit has totaled nearly $3.67 million in value, the latest PeckShieldAlert data showed that the specific exploiter addresses have moved about 1,242 ETH, which is roughly $2.4 million into Tornado Cash, which raises concerns, as this step is likely intended to hide the record of the stolen crypto funds.

Soon after the exploit, Aperture Finance released the security incident analysis and announced that the affected web app functionalities had been stopped, with remediation and recovery messages.

Aperture Finance also attached the affected contracts list, as well as urged the users to revoke immediately both ERC-20 token approvals and ERC-721 liquidity position approvals that are connected to the risky addresses.

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