Decentralized finance (Defi) protocol Balancer was on Sunday hacked for more than $450,000 worth of cryptocurrency.
In two separate transactions, an attacker targeted two pools containing Ethereum-based tokens with transfer fees – or so-called deflationary tokens.
Pools with Sta and Stonk tokens were affected by this exploit, Balancer, an automated market marker protocol, said on June 29.
The hacker made off with around 601 ether, 11 wrapped bitcoin (WBTC), 22,600 chainlink (LINK), and 61,000 synthetix (SNX) – altogether totaling more than $451,000.
According to an analysis by Dex aggregator 1inch.exchange, the attacker used a smart contract to automate multiple actions in a single transaction. First, the hacker obtained a flash loan of $23 million worth of ethereum from the crypto-lending platform Dydx.
The money was used to swap Weth to Statera (Sta), a so-called deflationary token, back and forth 24 times until the Sta balance was totally drained. With Sta, at least one percent of the token is programmed to burn with every…