Bonq defi borrowing project exploited

The Polygon-based defi borrowing protocol Bonq suffered an attack in which 112 million ALBT tokens and around 100 million BEUR tokens were stolen. A flaw in the protocol enabled the attacker to modify oracle prices, allowing them to mint new ALBT and BEUR for significantly less than market price.

The attacker quickly bridged the tokens to the Ethereum chain and swapped them for ETH and USDC, collectively worth around $1.7 million. The price of ALBT plunged around 50%, and the BEUR Euro-pegged stablecoin significantly lost its peg.