Curve attacker begins to return stolen funds after bounty issued

cyptouser1 years agoCryptocurrencies News329

Curve attacker begins to return stolen funds after bounty issued

The attacker who targeted Curve Finance, a decentralized finance (DeFi) protocol, has begun returning some of the stolen funds. The attacker sent 4,821 Ethereum (ETH), worth approximately $9 million, in a series of transactions to Alchemix Finance, one of the victims.

Earlier today, the attacker had sent an on-chain message to Alchemix, asking the protocol to confirm its address before the funds were sent. The attacker further explained that he returned funds because he did not want to ruin the projects.

Curve Finance Hacker
Source: Etherscan

Following the news, Curve’s CRV token saw a price rally of nearly 6%, reaching $0.61640. This was prompted by speculations within the community that the attacker might return more of the stolen funds to the protocol.

On July 30, several DeFi projects suffered a reentrancy attack after multiple versions of Vyper, a smart contract language for the Ethereum virtual machine (EVM), were exploited by malicious players. Reports estimated that losses across these projects were more than $60 million.

The impacted projects had offered the attacker a 10% bounty on Aug. 3 in exchange for the return of funds stolen.

Contagion fears persist

Meanwhile, the attack had wider implications, presenting a contagion risk. The value of Curve’s native token, CRV, fell by more than 20% after the attack. The situation was further complicated by the fact that Curve’s founder, Michael Egorov, had used CRV as collateral on several lending protocols, including Aave

Since then, Egorov has been involved in a fire sale of CRV, selling over 100 million tokens for $42.4 million to different entities, including market maker Wintermute, Tron founder Justin Sun and others, via over-the-counter deals.

However, on-chain analyst Lookonchain reported that Egorov still has $65.34 million in debt across different DeFi protocols.


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Visa introduces way to pay gas fees with your credit card

Visa is taking significant strides toward simplifying blockchain transactions. In what could be a game-changer for users, the payment giant has been working on an experimental solution that allows for the payment of on-chain gas fees with a Visa card.

Mustafa Bedawala, a product manager at VISA, shared the publication while detailing a perceived problem with crypto wallets; the constant need to manage ETH balances for gas fees.

The typical process of using Ethereum requires users to purchase ETH either on an exchange or via an on-ramp service, followed by transferring ETH to their wallets to ensure sufficient coverage for fluctuating gas fees. This constant shifting of gas prices often results in users either overpaying or falling short of their ETH supply, adding a layer of complexity and friction.

Visa Card payments for gas fees

Visa’s proposed solution leverages Ethereum’s ERC-4337 account abstraction standard and a feature known as the “paymaster” smart contract, which facilitates off-chain gas fee payments. The process is envisaged to work as follows:

  1. A user initiates an Ethereum transaction through their wallet, which then sends the transaction details to the paymaster web service.

  2. The web service calculates the cost of the gas fee and subsequently charges the user’s Visa card using Visa’s Cybersource system to process the card payment.

  3. Following this, the web service sends back a digital signature to the wallet, approving the payment. This approval is valid for a specified time window.

  4. The wallet attaches this signature to the transaction and forwards it to Ethereum.

  5. The paymaster smart contract then verifies the validity of the signature and covers the gas cost to process the transaction.

Visa introduces way to pay gas fees with your credit card

Visa introduces way to pay gas fees with your credit card

Visa is taking significant strides toward simplifying blockchain transactions. In what could be a ga...