Russian court blocks use of messaging app

A Russian court has ordered a block on a popular messaging app following a demand by authorities that it share encryption data with them.

The ban follows a protracted row between Telegram and Russian officials, who insist they need access to encryption keys to investigate serious crimes. The Moscow court ruled Telegram would be blocked in Russia until it handed over the keys.

Telegram, a popular app developed by Russian entrepreneur Pavel Durov, argued the FSB intelligence service is violating consumer rights. Authorities said the app has been used by violent extremists.