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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The post Shibarium Shiba Bridge Hit by $2.3M Flash Loan Attack! appeared first on Coin Engineer.

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Unlike loans from banks, flash loans are completely decentralized and operate within the DeFi ecosystem. This means there is no need for a bank to be involved in the process.

What’s interesting about flash loans is how fast they are. While traditional loans can last for many years, a flash loan needs to be repaid in just minutes. The loan is executed through a smart contract, which automatically borrows the money and repays it with interest, all in one go.

Before a flash loan can be confirmed and added to the blockchain, it goes through a validation process that typically takes a few seconds to a few minutes. During this time, the network needs to agree that the transaction is valid. If it’s not approved, the transaction becomes void and doesn’t get recorded on the blockchain.

If a borrower fails to repay the loan before the validation process is complete, the network cancels the transaction. In this case, the lender receives their assets back, as if the loan never took place. This is possible because the tokens weren’t transferred to the borrower in the first place.

How Do Flash Loans Differ From Traditional Loans?

Firstly, they don’t require any guarantee, making them unsecured loans.

Instead of relying on physical assets, flash loans rely on smart contracts to ensure repayment.

Smart contracts are special lines of code that run on a blockchain. They are automatically executed when certain conditions are met. In the case of flash loans, smart contracts make sure that the borrower can immediately repay the loan with interest before the loan is approved and executed.

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