Harmony Horizon Bridge Hack

Social EngineeringHighConfirmed$100M

Description

Private keys of 2 of 5 multisig signers compromised via social engineering, allowing the bridge to be drained of ~$100M.

Evidence & References

Affected Protocol

Harmony

Vulnerability Type

multisig key compromise

Date Occurred

2022-06-23

Date Reported

2026-04-21