The post Flow Blockchain Announces Protocol Fix to Restore Network After Exploit appeared on BitcoinEthereumNews.com.

TLDR: Flow Blockchain restores network to pre-exploit checkpoint to remove unauthorized transactions. Users must resubmit transactions submitted during Dec 26–27 exploit window after restart. Mainnet 28 fix deployed; validators and partners synchronize to ensure accurate balances. Network live status pending final partner synchronization to resume full transaction operations. Flow Blockchain has released a protocol fix following a security exploit that affected its mainnet. The Flow Foundation confirmed that the network will be restored to a checkpoint prior to the incident to remove unauthorized transactions.  Users who submitted transactions between 11:25 PM PST on December 26 and the network halt at 5:30 AM PST on December 27 must resubmit them after the restart. User balances and assets before the exploit remain secure, ensuring the network’s integrity. Protocol Fix Deployment and Network Restart The Flow Foundation stated that the protocol fix, identified as Mainnet 28, has been successfully deployed by validators.  Node operators are coordinating to implement the upgrade, with the target restart scheduled within one hour of the announcement.  UPDATE: Protocol Fix Released The protocol fix addressing today’s exploit has been released. Node operators are now coordinating to deploy the upgrade. WHAT THIS MEANS FOR NETWORK RESTART The network will be restored to a checkpoint prior to the exploit. This is necessary to… — Flow.com (@flow_blockchain) December 27, 2025 During this period, the network is online but remains in read-only mode, preventing new transactions until synchronization is complete. The protocol fix addresses the exploit by reverting the ledger to a pre-exploit checkpoint. This step removes any unauthorized activity recorded during the exploit window while protecting legitimate user funds.  The Foundation acknowledged that transactions submitted during the downtime will need to be reprocessed once normal operations resume. In a tweet, Flow Blockchain clarified: “Node operators are now coordinating to deploy the upgrade.…

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Filed under: News - @ December 28, 2025 11:25 am