According to BlockBeats, on September 16, according to Cyvers Alerts monitoring, the DeFi project DeltaPrime on the ARB chain was suspected of being attacked, and the administrator seemed to have lost the private key. Suspicious addresses are continuously transferring assets. So far, the affected liquidity pools are DPUSDC, DPARB, and DPBTCb. The attacker has exchanged USDC for ETH. So far, the total loss is estimated to be about 4.5 million US dollars. The attack is still ongoing and the total loss may increase.