A courtroom in Moscow has authorized a request from the Russian media regulator to block the Telegram messaging app right away.
The media regulator sought to block the app for the reason that company had refused to hand over encryption keys used to scramble messages.
Security officers say they want to observe possible terrorists.
But the corporate mentioned the way in which the provider was once constructed intended it had no get right of entry to to shoppers’ encryption keys.
Telegram had overlooked a cut-off date of four April to hand over the keys.
Russia’s major safety company, the FSB, has mentioned Telegram is the messenger of selection for “international terrorist organisations in Russia”.
A suicide bomber who killed 15 other folks on a subway teach in St Petersburg final April used the app to be in contact with accomplices, the FSB mentioned final yr.
The app could also be extensively utilized by the Russian government, Reuters information company studies.
In its courtroom submitting, media regulator Roskomnadzor mentioned Telegram had failed to agree to its prison necessities as a “distributor of information”.
Telegram’s legal professional, Pavel Chikov, mentioned the legit strive to prevent the app being utilized in Russia was once “groundless”.
“The FSB’s requirements to provide access to private conversations of users are unconstitutional, baseless, which cannot be fulfilled technically and legally,” he mentioned.
The messaging app is extensively used throughout Russia and lots of countries within the Middle East, in addition to round the remainder of the sector. It says it has greater than 200 million lively customers.
Its recognition has grown as a result of its emphasis on encryption, which thwarts many extensively used strategies of studying confidential communications.
It permits teams of up to five,000 other folks to ship messages, paperwork, movies and images for free of charge and with whole encryption.
Telegram has been utilized by the Islamic State (IS) staff and its supporters although the corporate says it has made efforts to shut down pro-IS channels.