Telegram is heavily used in both Ukraine and Russia and has become a critical source of information since the Russian invasion.

The ban affects government officials and military personnel, over concerns about Russian cyber-attacks.

The Ukrainian government has banned the use of the Telegram messaging app on state and military mobile phones in a bid to prevent Russian spying.

Ukraine has banned government officials, military personnel and other defense and critical infrastructure workers from installing the popular Telegram messaging app on state-issued devices.

Ukraine bans Telegram for government, military, and infrastructure workers, citing national security and cyber threats.