Patrick McCorry, a core contributor to the Arbitrarum ecosystem and former employee of the Arbitrarum Foundation, provided a brief overview of the technology behind the freezing of 30766 ETH Insert a cross chain message impersonating an attacker through a temporary upgrade of the L1 Inbox contract, and then atomically execute and roll back the upgrade. The approximate process is as follows: Temporary upgrade of L1 Inbox contract → Insert a forced inclusion message pretending to be from an attacker. This message was parsed by ArbOS in L2 as a Type 101 system transaction → executing fund transfer. Atomic completion (single L1 tx internal upgrade+execution+rollback), without affecting other states. Arbitrarum explicitly reserves this capability for 'catastrophic emergencies' and requires the consent of at least 9 members of the 12-of-N Security Council. Very rarely used. This is the first public large-scale use. This is bound to cause another huge uproar in the entire encryption field. Arbitrarum used the Type 101 system to freeze the hacker's operation worth approximately $7100 ETH. Technically, it is very efficient. However, it directly crosses the core ideological red line of DeFi: 'Your keys, not your coins'. It's not a small matter, it involves a public stress test on the commitment to L2 decentralization. This incident brings us back to the classic dilemma of encryption: pragmatic security versus fully decentralized security.