Zano: Over 200 million USD in illegal tokens caused a 30-day rollback of the blockchain

Zano disclosed that there is a validation deficiency in the Gateway Addresses introduced by Hard Fork 6, allowing attackers to mint approximately 18.4 million ZANO in a single transaction, and on September 25, they minted the same amount again, also minting fUSD in the same manner.

The project team stated that the value of the related fraudulent tokens exceeds 200 million dollars, with potentially affected activities involving 117,941 outputs and 65,301 transactions. Zano has restored the chain state from block 3,833,000 and disabled the Gateway Addresses, and the affected balances will be fully restored, with the ZANO supply and issuance plan remaining unchanged.