Killnet and its band of hacker collaborators are claiming they were able to pull off a trio of symbolic distributed denial-of-service (DDoS) attacks aimed at punishing some of the most critical supporters of Ukraine against the Russian invasion — Elon Musk’s Starlink satellite broadband service and the websites of the White House in the US and the Prince of Wales in the UK.

Researchers at Trustwave were able to find evidence corroborating the Russian-backed threat group’s claims.

Killnet claimed it took down Starlink service on Nov. 18, which has been critical for providing the Ukraine war effort with Internet connectivity. Indeed, Trustwave found Starlink customers on Reddit on the same day complaining they couldn’t log in to their accounts for several hours.