According to a statement published on Ankr’s website, a former employee of the decentralised finance (DeFi) protocol Ankr maliciously caused a $5 million exploit earlier this month. According to the company, the ex-employee inserted a malicious code package to conduct a supply chain attack, allowing a user to mint 6 quadrillion aBNBc tokens. The attacker then exchanged the newly created tokens for Binance Coin (BNB) before transferring the proceeds to crypto mixer Tornado Cash. They were eventually able to exchange the BNB tokens for 5 million USDC. “We are currently working with law enforcement,” Ankr said in a statement. Following the exploit, Ankr repaid affected aBNBc or aBNBb token holders by airdropping ankrBNB, as well as airdropping BNB to all affected DeFi liquidity providers.