Durov went on to say that the app would find ways to circumvent Russia's ban by using built-in systems in the service, he wrote online. The St Petersberg suicide bomber allegedly used the service to communicate with his accomplices.
Dmitry Peskov, spokesman for President Vladimir Putin, whose workforce makes use of Telegram to rearrange briefings for reporters, said it is not the Kremlin's place to the touch upon courtroom rulings.
In December 2017, a lawsuit was filed by Telegram with Russian Supreme Court, stating that FSB's order was invalid. "No documents have been provided to us, the positions of the FSB [Russia's Federal Security Service] and Roskomnadzor [Russia's media watchdog] haven't been clarified", the lawyer said, adding that "Telegram has not received anything". The company is insulated from the power that local governments typically have over IT companies because it has the "luxury of not caring about revenue streams or ad sales", Mr Durov said in a message posted on his Telegram channel.
Russia's deputy communications minister, Alexei Volin, said VPNs and other ways of circumnavigating the ban meant Telegram users would not be greatly inconvenienced.
There is not any immediate comment from Pavel Durov, the Telegram founder, that a Russian who fled the country at 2014 immediately after losing control of this Russian social network Vkontakte, which he'd also established. The hearing lasted 18 minutes and was boycotted by Telegram's lawyers in protest of the hurried process.
Later Pavel Durov, the founder of Telegram messenger responded to the ultimatum of Roskomnadzor to provide the keys within 15 days.
Over 200 million people around the world use Telegram, making it the ninth-most popular communications app. Telegram has announced its intention to launch a peer-to-peer technology, but it remains unclear if it would be enough to bypass a Russian ban.