Zano Rolls Back Blockchain After Vulnerability Allows Unauthorized Tokens

Zano's blockchain has been rolled back after a vulnerability involving Gateway Addresses allowed unauthorized ZANO and Freedom Dollar (fUSD) to enter circulation.

The roll-back occurred at block 3,833,000, immediately before Hard Fork 6, which introduced the affected feature. This invalidates a month of legitimate transactions along with the unauthorized tokens, meaning transactions made during that period will no longer appear on the recovered chain.

Zano's head of marketing and growth Quinten van Welzen stated, 'Doing nothing meant unauthorized ZANO and fUSD in circulation without limit, diluting every holder and breaking the most basic promise a currency makes: a fixed supply.'

The team is working to account for any losses and will publish a reimbursement and claims process.