Bridge Incident Registry
Incident case

Harmony Horizon Bridge 2022 exploit

In June 2022, Harmony's Horizon Bridge was exploited for roughly $100 million. Later public statements and FBI material linked the theft to Lazarus Group actors, while recovery and reimbursement details remain incomplete in this seed record.

reviewedcurrent

Incident facts

Incident title
Harmony Horizon Bridge 2022 exploit
Bridge
Harmony Horizon Bridge
Incident date
2022-06-24
Incident type
Exploit
Major incident
Yes
Affected chains
Harmony, Ethereum, BNB Chain
Affected assets
ETH, USDC, USDT, WBTC, BNB, ONE
Attack category
Validator Key Compromise
Reported loss
$100 million
Recovery
Partial Recovery
Reimbursement
In Progress
Restart
Not Reopened
Current outcome
Dead After Incident
Resolution
Unresolved
Last reviewed
2026-06-15
Last verified
2026-06-15

Timeline events

  • Harmony Horizon Bridge exploit disclosed2022-06-24

    Harmony disclosed that Horizon Bridge had been exploited for roughly $100 million in assets.

    Exploit DisclosedHigh

  • FBI attribution to Lazarus Group reported2023-01-23

    The FBI publicly attributed the Horizon Bridge theft to Lazarus Group and APT38 actors associated with North Korea.

    Attribution ReportedHigh

  • Harmony documented treasury-led recovery activity2023-03

    Harmony reported using treasury funds to recover and burn depegged assets while community recovery work continued.

    Recovery Program DocumentedHigh

  • Harmony Horizon included in bridge-hack research context2025-01-06

    Later cross-chain bridge hack surveys use Harmony Horizon as a major reference case for bridge exploit classification and attribution context.

    Research ContextMedium

  • Additional Harmony recovery partner proposed2025-06-17

    A community proposal described continued buyback-and-burn recovery work and sought recognition as an additional recovery partner.

    Recovery Partner ExpansionMedium

Evidence records

Known unknowns