Zano exploiter minted more than a quadrillion fUSD before blockchain rollback

An exploiter minted over a quadrillion unauthorized fUSD tokens on Zano, indistinguishable from legitimate ZANO. The team could not remove them without rolling back the blockchain, which they did. The rollback erased the fraudulent coins, restoring the network's integrity. ZANO holders were affected by the temporary inflation before the rollback.