Cyberattacks Hit Ukraine’s and Russia’s Emergency-Alert Apps
Neither side claims responsibility for false nuclear alerts By Anastasiia Malenko The Wall Street Journal Nov. 2, 2026 7:49 am ET Ukraine's Air Alert app warned users of radiation and chemical threats. Roman Pilipey/ AFP/ Getty Images Quick Summary -- A cyberattack on Ukraine’s Air Alert app sent false warnings of radiation, chemical threats and street fighting to users in Kyiv. -- A subsequent cyberattack hit Russia’s emergency-alert app, sending false warnings of Ukrainian drone attacks with nuclear payloads. -- Ukraine’s military blamed Russia for hacking its app, while neither country has claimed responsibility for the cyberattacks This summary was generated with AI and reviewed by an editor. Read more about how we use artificial intelligence in our journalism . KYIV— At 10:47 p.m. on Sunday, mobile phones in Ukraine’s capital city buzzed with unusual warnings. The country’s Air Alert app, which usually signals incoming Russian drones and missiles, ...