A justice in Moscow has authorized a ask from a Russian media regulator to retard a Telegram messaging app immediately.
The media regulator sought to retard a app since a organisation had refused to palm over encryption keys used to hasten messages.
Security officials contend they need to guard intensity terrorists.
But a association pronounced a approach a use was built meant it had no entrance to customers’ encryption keys.
Telegram had missed a deadline of 4 Apr to palm over a keys.
Russia’s categorical confidence agency, a FSB, has pronounced Telegram is a follower of choice for “international militant organisations in Russia”.
A self-murder bomber who killed 15 people on a transport sight in St Petersburg final Apr used a app to promulgate with accomplices, a FSB pronounced final year.
The app is also widely used by a Russian authorities, Reuters news organisation reports.
In a justice filing, media regulator Roskomnadzor pronounced Telegram had unsuccessful to approve with a authorised mandate as a “distributor of information”.
Telegram’s lawyer, Pavel Chikov, pronounced a central try to stop a app being used in Russia was “groundless”.
“The FSB’s mandate to yield entrance to private conversations of users are unconstitutional, baseless, that can't be over technically and legally,” he said.
The messaging app is widely used opposite Russia and many nations in a Middle East, as good as around a rest of a world. It says it has some-more than 200 million active users.
Its recognition has grown since of a importance on encryption, that thwarts many widely used methods of reading trusted communications.
It allows groups of adult to 5,000 people to send messages, documents, videos and cinema but assign and with finish encryption.
Telegram has been used by a Islamic State (IS) organisation and a supporters yet a association says it has done efforts to tighten down pro-IS channels.