Aethir says it has contained an exploit on its ATH cross‑chain bridge and capped user losses at under $90,000.
How the ATH Bridge Exploit Unfolded
Aethir, a decentralized GPU cloud infrastructure project, confirmed that attackers targeted its AethirOFTAdapter cross‑chain contract. The adapter connects ATH tokens on Ethereum to other networks, including BNB Chain and Tron.
Blockchain security firm PeckShield initially estimated the exploit’s total value at about $400,000. However, Aethir later clarified that user-side losses sit under $90,000, after the team moved quickly to shut down affected contracts and track funds.
According to early on‑chain tracing, the attacker bridged stolen assets from BNB Chain to Tron using Symbiosis Finance. The funds now sit in a small set of Tron addresses that Aethir and partner exchanges say they are actively monitoring.
Aethir’s Response and Containment Steps
Aethir reports that its internal monitoring tools detected unusual activity on the bridge contract and triggered an immediate response from its security team. Engineers disconnected the compromised contracts within minutes, preventing further draining and stopping the exploit from spreading to other components.
The project stressed that the main ATH token contract on Ethereum and the total ATH supply on that chain remain untouched. Key infrastructure, including the ETH‑ARB bridge operated through Squid, continues to function normally, according to Aethir’s notice.
Aethir is now working with major centralized exchanges, including Binance, Upbit, Bithumb, and HTX, to blacklist attacker wallets and freeze any funds that reach their platforms. The team has also urged users to avoid several flagged contract addresses across Ethereum, BNB Chain, Tron, Solana, and zkSync while a full audit is underway.
Even though the exploit’s gross value may exceed $400,000, Aethir says its rapid isolation of the bridge limited direct user losses to around 90,000 dollars. The project has pledged to publish a complete compensation plan and a detailed incident report in the coming week.
Security firm ZeroShadow has also been helping analyze the attack path and follow the stolen funds across chains. Aethir has already patched the vulnerable contracts and started a broader review of related bridge code to prevent repeat exploits.
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