BlockSec: Suspicious transactions on the Ethereum chain resulted in a loss of approximately $120,000

A few hours ago, its system detected several suspicious transactions (initiated by different EOAs) targeting two unknown contracts deployed to the same address on Ethereum, resulting in a loss of approximately $120,000. The root cause is suspected to be the lack of access control in the key functions approveERC20 and withdrawAll in the victim contract (which is not open source), allowing the attacker to clear the tokens held in the contract.