Despite a tweet on August 19 that "sites are coming back online", and a developer stating that they were "mostly back in control", the website apparently remained compromised for several days. The project reiterated via tweet on August 20 that the website was still not safe to use.
It's unclear how much was stolen as a result of the hijacking.
- Tweet by CelerNetwork
- Etherscan for attacker wallet
- "Truth Behind the Celer Network cBridge cross-chain bridge incident: BGP hijacking", SlowMist
Curve acknowledged the apparent exploit, tweeting at the iwantmyname domain platform to say they believed the issue was on their end. Around an hour after the issue was widely noticed, Curve announced the "issue has been found and reverted", and to use the alternate Curve Finance domain until DNS changes propagated for the affected domain. They also urged users to revoke any recent contract approvals they'd made on the Curve platform.
FixedFloat tweeted that they had been able to freeze 112 of the stolen ETH (~$192,000) that had been transferred to their platform. Binance later announced that they'd recovered the remaining stolen funds, with founder CZ tweeting, "The hacker kept on sending the funds to Binance in different ways, thinking we can't catch it. 😂"
Polygon's chief information security officer Mudit Gupta told CoinDesk that day that "no funds [were] lost as far as we know but we are still investigating", and that dApps using the Ankr RPC endpoint were non-functional. Ankr later announced that the RPC systems had been fully restored, and that the breach had come from a "third-party vendor" that enabled attackers to change Ankr's domain hosts.
The hacker only managed to exfiltrate around $18,000 before being discovered, and SpiritSwap shut down their swapping through their router to prevent the attack from continuing.
MM.Finance suffered a similar attack earlier in the month, losing $2 million after an attacker gained control of the domain and swapped in their own address to siphon funds.
"Please do not perform any transactions or your funds will be sent to the exploiter wallet," MM.Finance tweeted shortly before taking the website offline. Three days earlier, MM.Finance had published a blog post to address "FUD" in their ecosystem stemming from a popular Reddit post that described MMF as an "inverse pyramid of derivatives" that the author believed would "topple", and outlined the project's "rosy future".
The project promised to try to compensate users, with its developers foregoing 45 days of trading fees to reimburse users. They also appealed to the OKC crypto exchange to intervene to help recover funds from someone they believed to be the attacker, and threatened the attacker with the FBI. "With all these information, we have more than what we need to bring this information to the FBI," they wrote on Twitter. "So here's the deal, return 90% of the funds you stole and we will let this go, no questions asked. You have 48 hours to return these funds."