Zano Blockchain Rolled Back One Month After Gateway Address Exploit

Security Incident Forces Hard Reset

Zano's development team initiated a complete rollback of the blockchain to the block height immediately before Hard Fork 6, effectively moving the network back approximately one month. The decision came after a security vulnerability was exploited within the Gateway Address system that was introduced during that hard fork.

Gateway Address Feature Compromised

Hard Fork 6, launched roughly a month prior, implemented Gateway Addresses as part of Zano's protocol architecture. The exploit targeted this new feature, allowing attackers to potentially manipulate transaction processing or withdraw funds through the compromised gateway mechanism.

Network Restarted at Pre-HF6 Height

The blockchain restart positioned the network at the exact block height that existed before Hard Fork 6's activation. This rollback erased all transactions and state changes that occurred after the gateway address implementation, effectively reverting the network to its pre-vulnerable state.

Community and Developer Response

The rollback represents a significant intervention in blockchain operations, typically reserved for severe security breaches. Zano's team has not yet disclosed the full scope of the exploit or the estimated financial impact on the network's ecosystem.

Implications for Gateway Architecture

The incident highlights vulnerabilities in Zano's gateway address implementation and raises questions about the security audit processes for protocol upgrades. The development team will need to address the exploited vulnerability before reintroducing gateway functionality with enhanced security measures.

Source: Cointelegraph