11 BTC Vanished from Bisq Protocol After Cyber ​​Attack

Another cyber attack has rocked the crypto industry, this time hitting Bisq Protocol, a cryptocurrency platform.Bitcoin exchangepeer-to-peer (P2P) based platform known for its decentralized approach.

This incident resulted in the loss of approximately 11 BTC, equivalent to nearly $1 million USD. While not as significant as other major cases, it highlights the security vulnerabilities that can still exist even in systems designed without a central authority.

Key Points

• The attack exploits a verification loophole in multisignature transactions.
• Around 11 BTC were successfully stolen by the perpetrator.
• The Bisq team responded quickly with patches and a compensation plan.

11 BTC Vanished from Bisq Protocol After Cyberattack

This attack stems from a flaw in the verification mechanism that malfunctioned. In the Bisq system, transactions are executed using a multi-signature (multisig) method, requiring more than one signature to approve a transaction.

However, the perpetrators found weaknesses in this scheme, particularly regarding the manipulation of negative miner fees.

This loophole allows them to trick the system so that funds can be diverted to addresses they control.

How Could This Gap Occur?

The main weakness lies in the lack of thorough validation of specific transaction parameters. In this context, multisig transactions are not rigorously checked for unreasonable fee values.

As a result, the perpetrator can:

• Manipulating transaction structure
• Avoiding verification that would otherwise prevent anomalies
• Directing funds to their own wallet

Fortunately, the Bisq team quickly identified that this vulnerability was serious but limited, meaning it did not spread across the network or cause wider systemic damage.

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Bisq Team's Quick Response

After the incident was detected, the Bisq development team immediately took mitigation measures. They released a patch to close the vulnerability and announced plans for software updates to ensure long-term security.

Additionally, users are also asked to temporarily reduce the amount of Bitcoin stored in the Bisq wallet to minimize additional risks.

Compensation Plan for Victims

One important step taken was a compensation proposal for affected users. The Bisq team offered two reimbursement options:

• In the form of Bitcoin (BTC)
• In the form of BSQ tokens (Bisq governance tokens)

However, the final decision will be determined through a DAO (Decentralized Autonomous Organization) vote which is scheduled to be completed after the current cycle ends on May 25, 2026.

This move demonstrates Bisq's commitment to transparency and community-driven governance.

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Impact and Lessons for the Crypto Industry

This case serves as a reminder that decentralization isn't risk-free. Even platforms without a central authority are still vulnerable to bugs or errors in their code.

Interestingly, this incident occurred amid a surge in crypto attacks globally. In April 2026 alone, a significant spike in hacking cases was recorded, indicating that attackers are becoming increasingly sophisticated in exploiting technical vulnerabilities.

Read Also:Crypto Markets Experience Their Most Hacked Month in April

Important Lessons for Investors and Users

Some things that can be learned from this incident include:

1. Don't Keep Assets on the Platform Too Long

Even though the platform is decentralized, there are still technical risks. It's recommended to store assets in a private wallet for added security.

2. Pay attention to official updates and announcements.

The Bisq team's quick response exemplifies the importance of staying informed and taking action quickly.

3. Audit and Security are Key

Crypto projects must continually conduct thorough code audits. Even small flaws can have significant consequences if left undetected.

4. Risk Diversification

Don't put all your assets in one platform. Diversification helps reduce the potential for large losses.

Read Also:Astroport Hit by Cyberattack, ASTRO Tokens Plunge

Conclusion

The incident of the loss of 11 BTC from Bisq Protocol is proof that security remains a major challenge in the crypto world, even for decentralized platforms.

However, the Bisq team's quick response and compensation plan demonstrate a sense of responsibility and transparency that is commendable.

For investors, this incident serves as a reminder to always be vigilant, understand the risks, and use platforms with strong security systems.

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FAQ

What is Bisq Protocol?

Bisq is a P2P Bitcoin exchange platform that operates decentralized without intermediaries.

How much BTC was lost in this attack?

Around 11 BTC, with a value approaching $1 million USD.

What is the main cause of this attack?

Loopholes in the multisig transaction verification mechanism, particularly regarding miner fee manipulation.

Are all Bisq users affected?

No. This attack was limited and did not affect the entire network.

Will users get compensation?

Yes, the Bisq team proposes compensation in BTC or BSQ, depending on the DAO voting results.