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Umbra Protocol frontend suspends service to assist with hacker attack fund recovery efforts
Deep Tide TechFlow News, April 22, according to an official post from Umbra (@UmbraCash), the privacy payment protocol Umbra was used to transfer funds related to recent hacking attacks, involving an amount of 349 ETH (approximately $800k). Umbra stated that because it primarily protects the recipient’s identity rather than the sender’s in its privacy address system, it offers limited practical help in concealing the hacker’s source of funds; the stolen funds can still be identified and traced. The team has maintained communication and collaboration with security researchers.
Umbra also pointed out that the protocol is driven by autonomous smart contracts, and the team cannot prevent anyone from using the contract or self-hosted front-end versions. For the purpose of assisting with fund recovery, the team switched the hosted front-end to maintenance mode at 6:45 AM Eastern Time on April 21, and will restore access after confirming it does not hinder the recovery process. The protocol itself is functioning normally, and all funds within the privacy addresses are secure.