Harmony Protocol confirms unauthorized ONE minting, suspends bridge services after August 12 incident
AI Market Summary
Harmony confirmed a major unauthorized ONE mint via a cross-shard receipt replay exploit, with on-chain reconstruction indicating ~3.01T ONE issued to attacker wallets. Bridge services are suspended, Shard 0 is halted, and the team is coordinating freezes with exchanges and LayerZero while preparing a pre-attack rollback. The incident elevates protocol risk, disrupts liquidity/settlement, and may pressure near-term confidence in ONE and Harmony infrastructure.
Impact level
● High
Affected assets
ONE/USDT-9.01%
AI Insight · ONE/USDTAI Insight
▼ Bearish
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Harmony Protocol said an unauthorized ONE minting incident occurred on August 12. Initial analysis put the minting at 4000000000 ONE, but a later on-chain reconstruction found about 3010000000000 ONE was issued to four attacker wallets through six forged crossshard transactions. The team said it has fixed the crossshard receipt verification flaw and a quorum verification bug for the prestaking committee, and deployed Mainnet v2026.1.1 at 06:30 (UTC+8) on August 12. It is preparing to roll back the network to block 92,730,034 and has suspended bridge services.
