Key facts
- Ukraine's Air Force said the app for a short time showed Kyiv and other areas subject to a nuclear alert.
- The air force said the abnormality later disappeared and that there was no radiation threat.
Ukraine's Air Alert app hacked, false nuclear and chemical warnings sent
IN SHORT
Ukraine's Air Alert app was compromised late on November 1, 2026, and users received false warnings of radiation, chemical attack and street fighting, Ukraine's Air Force said. Sirens also sounded in streets across the country, including Zakarpattia Oblast in western Ukraine, journalists on the ground reported.
Who's Involved
Ukraine's Air Force
said the alert app was hacked
Air Alert app
notification app that sent false warnings
Svitlana Onyshchuk
Ivano-Frankivsk Oblast governor who reported a cyberattack
Natalia Zabolotna
Vinnytsia Oblast governor who warned against clicking links
Ajax Systems
security technology company that co-made the app
Digital Transformation Ministry
ministry that co-made the alert app
↳ Why This Matters
Ukraine's Air Force said on November 1 that the public air raid alert app had probably been subjected to hostile interference, and that the app for a short time showed Kyiv and other areas subject to a nuclear alert. The abnormality later disappeared, the Air Force said.