[BlockSec: Two blockchain developers attacked, contract vulnerabilities lead to $17 million loss] According to BlockSec Phalcon monitoring, a series of suspicious transactions targeting victim contracts deployed on Ethereum, Arbitrum, Base, and BSC were discovered several hours ago. These contracts, deployed by two creators, were attacked, resulting in total losses exceeding $17 million. The victim contracts are not open-source and appear to have arbitrary call function vulnerabilities. The attackers exploited existing token authorizations to execute transferFrom operations and steal assets. Affected deployers: 0xbeef63AE5a2102506e8a352a5bB32aA8B30B3112 — Loss of approximately $3.67 million; 0x9cb8d9BaE84830b7F5F11ee5048c04a80b8514BA — Loss of approximately $13.41 million.