Layer-1 blockchain Harmony released an emergency patch on August 12 to halt unauthorized minting of its native ONE token. Onchain researcher Juiceberg estimates roughly 4 billion ONE tokens, representing approximately 26% of supply, were minted without authorization, with 2.8 billion reaching exchanges. Harmony has requested platforms to block and freeze traceable funds. The v2026.1.1 patch addresses two flaws in cross-shard receipts: one allowed a mathematically neutral aggregate signature to bypass quorum verification, while the other enabled previously processed receipts to be replayed. A full blockchain rollback remains under consideration, but no decision or revert point has been announced. The ONE token fell 39.69% in 24 hours.
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