Overview
- Late on Sunday the widely used Ukrainian air‑raid app Air Alert sent false messages warning of radiation, chemical attacks and a Russian Oreshnik missile, and officials said the app had been compromised.
- Push notifications for Air Alert were temporarily disabled while the developer Ajax Systems and the Ukrainian Ministry for Digital Transformation restored service with extra protections.
- Hours after the Ukrainian incident Russia reported a massive cyberattack that injected false alerts into its civil‑defence app, though Moscow has not publicly attributed responsibility.
- A pro‑Russian group called Hitcore claimed the hack of the Ukrainian system but independent verification is limited and forensic investigations into both attacks are ongoing.
- The false alarms reached millions of users — Air Alert has about 6.7 million daily users — prompting panic, reliance on sirens and broadcasts, and renewed warnings that civilian warning networks are a high‑value target with wider escalation risks.