Bitget’s $387.5 million hack exploited transaction-signing trust chain

Sep 26, 2026 23:27 (28d ago)

GoPlus Security reviewed Bitget’s $387.5 million security incident.
The attack compromised transaction-signing controls rather than leaking private keys.
GoPlus Security said the incident involved the transaction-signing trust chain.

Bitget’s $387.5 million security incident involved a compromise of the transaction-signing trust chain rather than a private-key leak, GoPlus Security said. Transaction-signing controls govern how blockchain transactions are approved, making the finding distinct from direct theft of cryptographic keys.