The decentralized finance (DeFi) platform Arcadia Finance was targeted in an attack that led to the loss of around $3.5 million in crypto assets.
The issue came from a weakness in the platform’s Rebalancer contract. According to a report by Cyvers, the attacker exploited a part of the contract that allows users to input custom swap data.
On July 15, the attacker deployed a malicious contract, which triggered the exploit within under a minute. After taking the funds, they exchanged them for Wrapped Ethereum

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The tokens taken in the first round included about 2.3 million USDC
After the initial breach, Arcadia was hit again. This second round of theft happened through multiple transactions and took nearly another $1 million.
The Arcadia Finance team confirmed the issue through a post on X, which reads:
The team is aware of unauthorized transactions via a Rebalancer. Remove all permissions for asset managers. More information will follow.
The platform also asked users to take action by canceling any permissions tied to the Rebalancer contract to avoid further risks.
On July 9, GMX’s first-generation decentralized exchange (DEX), GMX V1, was temporarily suspended from trading. What happened? Read the full story.
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