Tools Crypto Exploit Tracker exploit-0020
Exploit record
B² Network Staking Exploit
- Loss
- $4M
- Attack vector
- Access Control
- Chain
- Bitcoin L2
- Sector
- Staking
What happened
On 23 July 2026, B² Network, a Bitcoin layer-2, lost about $3.86M after an attacker seized the upgrade authority on its staking contract. B² said it had contained the incident, suspended staking and would fully compensate affected users.
The third protocol drained on the same day, after the attacker gained control of the staking contract's upgrade authority.
Sources
- YFarmX reportyfarmx.com/crypto-bridge-attacks-36m-keys-not-cryptography/
- B² Network statementx.com/BSquaredNetwork
One record from the Crypto Exploit Tracker, maintained by the Security Desk. Data: CSV · JSON ·RSS · CC BY 4.0 with attribution to YFarmX.Tracker updated · 15 September 2026