A recent security breach has resulted in the theft of $24 million from AFX Trade, a decentralized exchange operating on the Arbitrum network. The exploit targeted a custody bridge managed by AFX, rather than the Arbitrum network itself, allowing the attacker to siphon off funds which were then transferred to the Ethereum blockchain. In an unusual move, AFX has offered the hacker a 30% cut of the stolen funds in exchange for returning the remaining balance1. This approach highlights the desperation of the exchange to recover the lost funds and minimize the damage. The fact that the exploit was contained to the custody bridge suggests that the Arbitrum network's core architecture remains intact. However, the incident still poses significant concerns for the security of decentralized finance platforms, so what matters most to practitioners is the need to re-examine the security protocols of custody bridges and their potential vulnerabilities.