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Curve Finance Exploited in Ongoing Attack

The stablecoin trading service is experiencing an ongoing exploit and warns users from engaging with the frontend until further notice.

Curve Finance Exploited in Ongoing Attack
Shutterstock cover by REDPIXEL.PL

Key Takeaways

  • Curve Finance is suffering from an ongoing exploit.
  • A malicious contract has so far siphoned more than $573,000 from victims.
  • The Curve team has warned users against interacting with the frontend until further notice. 

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DeFi protocol Curve is currently being exploited through its frontend. Over $573,000 has already been taken by the attacker.

Curve Frontend Exploited

Curve Finance is being exploited.

According to Paradigm researcher samczsun, Curve’s frontend is currently compromised. The researcher warned Curve users not to use the protocol until further notice. 

Curve later appeared to confirm the ongoing exploit on Twitter, writing in reply to samczsun, “Don’t use the frontend yet. Investigating!”

On-chain data show that the malicious contract associated with the exploit appears to have siphoned over $573,000 in USDC and DAI from eight different victims so far. The funds, already transferred to the attacker’s wallet and swapped for ETH tokens, were sent to crypto exchange FixedFloat, first in batches of 45 ETH, then in amounts ranging from 20 to 22 ETH.

At press time the attacker had also started sending tokens through cryptocurrency mixer Tornado Cash, which was sanctioned by the U.S. Treasury Department yesterday.

The Curve team hinted the attacker possibly cloned the Curve site, made the Domain Name System (DNS) direct towards the fraudulent site and then added approval requests to the malicious contract. It furthermore clarified that curve.exchange, contrary to curve.fi, seems to have been unaffected.

Curve Finance is a decentralized finance (DeFi) protocol that provides “extremely efficient” stablecoin trading services with low slippage and fees. It is considered a pillar of the DeFi ecosystem, with over $6 billion in total value locked. 

Update: the Curve team posted on Twitter at 08:27 UTC that the exploit had been patched, and urged Curve users to revoke Curve contracts they may have approved in the last few hours.

Update 2: FixedFloat announced that it has frozen funds amounting to 112 ETH (roughly $191,000) in connection to the exploit.

This is a developing story.

Disclosure: At the time of writing, the author of this piece owned ETH and several other cryptocurrencies. 

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