Russia and Ukraine say their emergency alert apps were hacked

Russia and Ukraine have said their emergency alert apps were hit by cyberattacks that sent false alarm warnings to users.

Moscow said a "massive cyberattack" had affected its app, stressing that the wider alert system was "operating as normal". A Ukrainian intelligence group claims the messages included fake warnings of nuclear strikes on Russia.

Shortly before, Ukraine's air raid alert app sent out false warnings of a radiation threat in Kyiv after an apparent hack.

Kyiv blamed Russia for the attack on its app. Moscow has not yet said whom it suspects of attacking its system.

Mia Primavera / CC0 1.0 · Photograph source