The Ronin Bridge project experienced unusual cross-chain asset withdrawals, suggesting a potential attack. According to the SlowMist security team, the vulnerability was caused by the modification of weight to an unexpected value, allowing funds to be withdrawn without passing any multi-signature threshold checks. The attacker extracted approximately 4,000 ETH and 2 million USDC from the bridge, amounting to a value of around $12 million. As of August 7th, white hats have returned $12 million worth of assets and received a $500,000 bug bounty.