Ankr Suffers $304.5K Loss Due to Cross-Chain Exploit

By Khushi Thakur LinkedInNovember 9, 2026 · 2 Min

Ankr reports a loss of around $304.5K from a cross-chain exploit. Here's why traders should stay alert.

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By Khushi Thakur LinkedInNovember 9, 2026 · 2 Min

Ankr reports a loss of around $304.5K from a cross-chain exploit. Here's why traders should stay alert.

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Quick Take

Summary is AI generated, newsroom reviewed.

Ankr loses approximately $304.5K due to a cross-chain exploit.
The exploit involved forged transaction receipts altering withdrawal details.
Investigation into the source of unauthorized signatures is ongoing.

Ankr has confirmed a loss of approximately $304.5K due to a cross-chain exploit, as reported by the CryptoTwitter commentator @SlowMist_Team. The attack involved five forged receipts that altered transaction details without proper verification. As investigations continue, this incident raises concerns about security protocols in cross-chain transactions, highlighting the need for increased scrutiny in the blockchain space.

Breaking It Down

The broader crypto market is currently experiencing mixed signals, with various assets showing different levels of momentum. Ankr’s reported loss comes as an alarming reminder of the vulnerabilities that can exist in decentralized finance (DeFi) protocols. The exploit involved the submission of five forged cross-chain receipts that referenced a legitimate Optimism transaction, but modified the recipient, token, and withdrawal amounts. All receipts bore valid signatures from the bridge’s trusted consensus signer, which allowed the unauthorized withdrawal to occur without independent verification of the actual source-chain events. The investigation into the origin of these unauthorized signatures is still ongoing, with no confirmation yet on whether the signer was compromised. This incident not only raises questions about Ankr’s security measures but also serves as a cautionary tale for other projects in the DeFi ecosystem.

Ankr operates as a decentralized infrastructure provider, offering tools and services to developers building on blockchain networks. The nature of cross-chain transactions makes them particularly susceptible to exploits if adequate security measures are not in place. Regulatory bodies may take interest in this incident, as it highlights the ongoing challenges surrounding security in the rapidly evolving blockchain landscape.

What to Watch

Traders should closely monitor Ankr’s response to this incident and any updates regarding the investigation into the exploit. The market reaction could influence Ankr’s price trajectory and overall sentiment towards cross-chain solutions. As the crypto space continues to evolve, further scrutiny on security measures will likely shape future developments in the sector.