Flow blockchain was hacked on December 28th, with approximately $3.9 million worth of assets illegally generated and transferred out via cross-chain bridges. The development team's response underwent a dramatic reversal within 48 hours — initially planning a complete rollback, it was ultimately changed to an isolated fix. Behind this decision lies the deepest contradiction in the blockchain ecosystem.

At first, the Flow Foundation proposed resetting the entire chain to a snapshot before the attack, seemingly a one-click solution. But the consequences of this approach are far more complex than it appears. All legitimate transactions during that period would be erased, and the cross-chain bridge protocols and validation nodes would face serious risks. This act of "rewriting history" directly challenges the core principle of blockchain — the immutability of the ledger.

Multiple cross-chain ecosystem participants and validators immediately voiced opposition. Their logic was straightforward: once this bottom line is broken, larger disasters like double spending and asset mismatches could occur. Some even pointed out more sharply that if project teams can easily modify transaction history under pressure, what is the point of decentralization?

Ultimately, choosing to isolate and fix meant that Flow upheld the principle of immutability, but market confidence was already severely damaged — the community’s fear that "rules can be rewritten" is more damaging than any technical detail. This incident exposes a harsh reality: security vulnerabilities can be patched, but once trust is broken, the cost of recovery is far higher.