Harmony ONE (Protocol Entity)
Auto-generated score, not yet verified against the scoring model. Under review — treat as indicative, not a verdict.
anchored·7TrqED…83UaSummary
Harmony (ONE) is a layer-1 sharded proof-of-stake blockchain founded in 2017 and launched on mainnet in June 2019. The protocol has suffered two major security incidents: the June 2022 Horizon Bridge hack attributed by the FBI to the DPRK-linked Lazarus Group, in which approximately $100 million was stolen, and an August 2026 cross-shard mint exploit in which an attacker forged between 4 billion and 3.01 trillion ONE tokens by exploiting a consensus-layer quorum verification flaw. The 2026 incident drove the ONE token to an all-time low of $0.0005735 and prompted an unilateral chain rollback erasing over 109,000 confirmed transactions, raising systemic concerns about the network's security architecture and degree of decentralisation.
Connected Entities
8 entities · 60 linked investigations- Harmony Bridge→mentioned with→Railgun(70%)
- Harmony Bridge→mentioned with→Ethereum(80%)
- Harmony Bridge→mentioned with→Binance(70%)
- Binance→mentioned with→Ethereum(65%)
- Harmony ONE (Protocol Entity)→mentioned with→Harmony ONE (August 2026 Layer-1 mint exploit)(80%)
- Harmony ONE (August 2026 Layer-1 mint exploit)→mentioned with→Harmony Bridge(70%)
- Harmony ONE (Protocol Entity)→mentioned with→Railgun(75%)
- Harmony ONE (Protocol Entity)→mentioned with→Binance(70%)
- Harmony ONE (Protocol Entity)→mentioned with→Ethereum(65%)
- Harmony Protocol (2026 ONE Token Exploit and L1 Shutdown)→mentioned with→Ethereum(70%)
- + 16 more
1 submission awaiting moderator review.
Timeline(14 events)
29 May 2019
Harmony ONE IEO launched on Binance Launchpad at $0.00318 per token, raising $5 million.
Coinspeaker16 May 2020
Harmony launches staking, becoming the first sharded blockchain to offer staking.
Coin Bureau Review24 June 2022
Harmony's Horizon Bridge exploited for approximately $99.6 million via private key compromise. Assets stolen include WETH, USDC, USDT, DAI, SUSHI, and AAVE across 14 transactions.
Elliptic Analysis13 January 2023
FBI formally confirms Lazarus Group (DPRK-linked) was responsible for the 2022 Horizon Bridge hack. Separately, approximately $60 million in stolen ETH moves through privacy protocol Railgun.
FBI Press Release / Decrypt11 August 2026
At 23:25:40 UTC, an attacker begins exploiting cross-shard receipt replay and quorum verification bypass vulnerabilities in Harmony Mainnet.
Harmony Official Incident Update12 August 2026
Approximately 4 billion ONE tokens minted across two empty-block transactions (1B ONE at block 92,731,152 and 3B ONE at block 92,732,898). Approximately 2.8 billion ONE moved to exchange deposit addresses within minutes. ONE token falls to all-time low of $0.0005735.
Harmony Official Incident Update / DailyCoin12 August 2026
Harmony deploys emergency patch v2026.1.1 at 06:30 UTC, halts Shard 0 at block 92,753,555, pauses bridge, and contacts exchanges to freeze exploiter-linked wallets.
Harmony Official Incident Update13 August 2026
Harmony publishes official incident update. Full-scope estimate of forged supply revised to approximately 3.01 trillion ONE across six cross-shard transactions into four exploiter wallets.
Harmony Official Incident Update17 August 2026
Harmony announces plan to roll back blockchain to pre-attack checkpoints on August 11 (Shard 0: block 92,730,034; Shard 1: block 94,978,278), eliminating 109,000+ regular transactions and 315 staking transactions.
The Block / crypto.news20 August 2026
Validators activate second stage of the rollback procedure.
CoinMarketCap AI News / CryptoRank21 August 2026
Rollback reported complete. Both shards stable for 24+ hours with near-full signing participation, advancing from epoch 3002 to 3004.
CoinMarketCap Latest NewsDecision Log
- slot 445507280 · hash 45V1dkH1myyKAgEwRN87S6koSsY4CJNJWyW7afdaSA68
- slot 443510370 · hash EW8TbK8L2dvXKhaEQFhvNXhB4fedcmYg7MPHk17puo5j
- slot 443510364 · hash 3d3EJSSLNnigxkBY47H981poxqYY5pbTEghiPLHvF5oN
- slot 443510197 · hash Dr7b5ugoy9tU8p7PyAymx8J4Ft3Gmfu2PMCtVPo8PLvq
This investigation is cryptographically anchored to the Solana blockchain (4 decisions). 19 of 25 cited source URLs have an Internet Archive snapshot.
model: claude-sonnet-4-6
generated: 8/24/2026, 11:18:10 PM
last updated: 8/25/2026, 2:47:24 AM
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