After the Flow blockchain was hacked, it chose to roll back, but this solution is riddled with flaws. The hackers have already transferred millions of dollars through cross-chain bridges, effectively making these funds disappear into thin air. Even more ironic, a user had just deposited 200k into Flow before the attack, only to find his account reset to zero after the chain rollback. This is the so-called "chain rollback" solution—users pay the price, and the stolen funds still cannot be recovered.