Cyberattacks on Ukrainian and Russian emergency warning apps

Cyberattacks that compromised or sent false alerts through Ukraine's Air Alert app and later Russia's emergency warning app, with unclear linkage between the incidents.

Ukraine and Russia report cyberattacks on emergency warning apps
Cyberattacks Target Ukrainian and Russian Emergency Warning Apps
Emergency Warning Apps in Ukraine and Russia Hacked with False Radiation and Chemical Weapon Alerts
Ceasefire in Oleshy Ends as Ukraine Evacuates Civilians Amid Cyberattacks on Warning Apps