BounceBit Shuts Down Blockchain After $3M Exploit, Moves to BNB Chain
TL;DR:
- An attacker stole 286.54 million BB tokens valued at approximately $3 million by exploiting an authorization flaw in the Evmos architecture.
- Block production on the Layer 1 network was halted at height 20,702,857 to stop unauthorized transfers.
- The protocol will issue a new BEP-20 token on BNB Chain based on a pre-exploit snapshot.
This Friday, BounceBit suffered a cyberattack that resulted in the theft of $3 million in digital assets. Consequently, the Bitcoin restaking and yield platform halted its blockchain.
- BounceBit (@bouncebit) August 21, 2026
The security incident occurred between August 19 and 20, 2026, when the attacker executed 14 transactions from nine mainnet accounts. The technical team detected the anomaly and proceeded to suspend block generation at height 20,702,857 to prevent further capital extractions.
According to market reports, the vulnerability originated from an authorization verification flaw within the native module of the Evmos technology stack, on which BounceBit’s Layer 1 was built. This design error allowed the attacker to designate third-party accounts as the source of funds without permission validation.
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