Telegram CEO Pavel Durov has disclosed user IP addresses to Russian authorities in response to a court order. The order, issued in relation to an ongoing extremism investigation, demanded that Telegram provide the IP addresses of its users who had joined channels promoting extremist content. Durov, who has previously advocated for user privacy, announced the compliance on his Telegram channel, stating that he had no choice but to comply with the law. The move has raised concerns among Telegram users and privacy advocates.