Shibarium Bridge Flash Loan Attack Details 

On September 14, the Shibarium cross-chain bridge became the target of a sophisticated flash loan attack. The hacker borrowed 4.6 million BONE tokens and gained control of 10 out of 12 validator signing keys, achieving a two-thirds majority. Using this power, the attacker attempted to withdraw approximately 224.57 ETH and 92.6 billion SHIB. 

Shiba Inu developers acted quickly to suspend staking and unstaking functions, locking the BONE tokens and removing majority control from the attacker. In addition, the hacker held about $700,000 worth of KNINE tokens from the K9 Finance DAO project. The K9 Finance DAO denylisted the attacker’s address to prevent KNINE token liquidation. LEASH, ROAR, TREAT, BAD, and SHIFU coins were also affected but have not been moved or sold. 

UPDATE 13/09/25

What we know so far about the recent incident

How the exploit was executed:

• The attacker used funds from the bridge hack in the same block as the attack to acquire 4.6M BONE to temporarily gain validator voting power, attempting to do it in one… https://t.co/4Ft1VMxeBv

— Shib (@Shibtoken) September 13, 2025

Developer Actions and Security Measures 

The Shiba Inu team secured investor funds by transferring them from proxy contracts to a multisig cold storage wallet. They collaborated with security firms Hexens, Seal911, and PeckShield to conduct a thorough investigation. The developers confirmed that the 4.6 million BONE tokens remain locked, and all validator assets are secure. They continue monitoring and freezing attacker-linked funds while preparing a full incident report. 

Market Impact and Token Performance 

Despite the attack, BONE token surged by 40% while SHIB gained over 8%. These movements reflect investor confidence following the team’s rapid intervention. The Shibarium attack highlights DeFi ecosystem risks, but Shiba Inu’s swift measures ensured all funds stayed safe. 

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