A week after popular audio chatroom app Clubhouse said it was taking steps to ensure user data couldn’t be stolen by malicious hackers or spies, at least one attacker has shown that the platform’s live audio can be siphoned.

An unidentified user was able to stream Clubhouse audio feeds this weekend from "multiple rooms” into their own third-party website, said Reema Bahnasy, a spokeswoman for Clubhouse. While the company says it has "permanently banned” that particular user and installed new "safeguards” to prevent a repeat, researchers contend the platform may not be in a position to make such promises.

Users of the invitation-only iOS app should assume all conversations are being recorded, the Stanford Internet Observatory, which was first to publicly raise security concerns on Feb. 13, said late Sunday. "Clubhouse cannot provide any privacy promises for conversations held anywhere around the world,” said Alex Stamos, director of the SIO and Facebook Inc.’s former security chief.