Humanity Protocol Links $36M Bridge Attack to Compromised Laptop

Humanity Protocol said a compromised laptop was likely behind a $36 million attack on its bridge. Terence Kwok said some multisig keys may have been accidentally backed up to the compromised device during the setup process.

The disclosure matters because bridge security remains a major risk area for crypto users and projects. Multisig controls are meant to reduce single points of failure, but the incident shows how operational mistakes around key storage can still create serious exposure.

According to Kwok, the suspected key compromise occurred during setup rather than through a flaw described in the protocol itself. The detail points to the importance of device hygiene, backup practices and access controls around sensitive signing keys.

The attack adds to broader concerns about cross-chain infrastructure, where bridges can hold large amounts of user funds and often depend on tightly controlled validator or signer systems. When those systems are compromised, losses can escalate quickly.

Humanity Protocol’s explanation remains limited to the information shared by Kwok, including that multisig keys may have been unintentionally backed up to the compromised laptop. The project has tied the $36 million bridge attack to that suspected operational failure.