Perjanjian Privasi Umbra menutup antarmuka depan untuk mencegah penyerang Kelp, co-founder Tornado Cash menyatakan langkah ini tidak cukup untuk menghindari tanggung jawab regulasi

22 April news, privacy encryption protocol Umbra has shut down its frontend website to make it more difficult for hackers to transfer stolen funds. Umbra stated that approximately 800,000 USD of stolen funds flowed through its protocol, and the shutdown of the frontend is a “maintenance mode” decision, which will be restored after ensuring it does not affect the recovery efforts. This move comes shortly after the Kelp protocol was attacked, losing over 280 million USD, with the attacker suspected to be a North Korean hacker attempting to transfer funds from Ethereum cross-chain to Bitcoin via protocols like Umbra. However, Tornado Cash co-founder Roman Storm warned that simply shutting down the frontend may not be enough to avoid regulatory accountability. He pointed out that in his case, authorities considered “changing the frontend as equivalent to controlling the entire protocol,” and “if you can modify the user interface, including updating through a new version via IPFS, then you have full control over the protocol.” Umbra responded that its protocol mainly “protects the identity of recipients, not senders,” and all stolen funds flowing through its protocol can be traced, and it has contacted security researchers.