The ruling came a month after Telegram lost a lawsuit it brought against the Federal Security Service, or F.S.B., Russia’s powerful and secretive security agency, which had demanded access to messages. The Kremlin pushed through a sweeping antiterrorism law in 2016 that mandated providing the security services backdoor access to encrypted applications, among other measures.
Telegram said last month that it now has 200 million active monthly users, many of them in the lands of the former Soviet Union and the Middle East. Because of its strong privacy protections, it has long been a favorite of the Islamic State and other extremist groups.
There was no immediate comment from Pavel Durov, the Telegram founder, a Russian who fled the country in 2014 after losing control of the Russian social network Vkontakte, which he had also created.
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He and other experts have said that the Kremlin is asking the impossible, because encryption happens at the individual user level and there is no universal key.
The ban puts the Kremlin in a slightly awkward position because Telegram is widely used by government agencies, including by President Vladimir V. Putin’s press office.
The Kremlin spokesman, Dmitri S. Peskov, after announcing his daily conference call on Telegram, first declined to comment and then said the company should follow the law.
“There is a certain legislation that demands certain data to be passed to certain services of the Russian Federation,” he said, adding that his office would switch to an alternative app as soon as Telegram stopped functioning.
But government officials have said that it could easily be replaced. The Foreign Ministry announced that it was moving to Viber, the news agency Interfax reported.
Telegram has the right to appeal, a process that could take from 10 days to a month. But the court gave Roskomnadzor the express right to shut the service down immediately, and it was not immediately clear which approach might be followed. THINK YOUR FRIEND WOULD BE INTRESTED? SHARE THIS STORY USING ANY OF THE SHARE BUTTON BELOW ⬇ PLACE YOUR TEXT ADVERT BELOW:>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>