Cyberattack Triggers False Radiation Alert in Kyiv Air App

WHO:

Fox News - Ukraine’s Air Force said the country’s official air-alert app had been hacked; it said there was no radiation threat.

Fox News - Ukraine’s Center for Strategic Communications blamed Russia for the incident; no group had publicly claimed responsibility.

Fox News - Russia’s Emergencies Ministry said its mobile application had been hit by a “massive cyberattack.”

Fox News - Estonian Foreign Minister Margus Tsahkna said Moscow was relying on hybrid tactics, including cyberattacks and GPS interference, rather than preparing for a full-scale invasion of NATO.

IJR - Ukraine’s Air Force said the warnings were false and there was no threat.

WHAT:

Fox News - Ukraine officials said the official air-raid alert app was likely hacked after it issued false “radiation hazard” and “chemical attack alert” warnings.

Fox News - Alerts told residents, “There is a radiation hazard alert in Kyiv. Do not go outside!” and “There is a chemical attack alert in Kyiv. Do not go outside!”

Fox News - The public air-alert map showed Kyiv and other areas under a nuclear alert. The app also issued false warnings about Russia’s hypersonic Oreshnik missile and alleged street fighting in Kyiv.

Fox News - Street loudspeakers broadcast a recorded message instructing people to take precautions.

Fox News - The Russian Emergencies Ministry said attackers used its app to send false information to the public.

IJR - The app sent false nuclear, radiation and chemical warnings, including a reference to Oreshnik.

WHERE:

Fox News - The false alerts concerned Kyiv, Ukraine; the map also showed other areas under a nuclear alert.

Fox News - The Russian Emergencies Ministry’s app was separately targeted.

WHY:

Fox News - Ukraine’s Center for Strategic Communications attributed the incident to Russia; no group publicly claimed responsibility.

HOW:

Fox News - The false warnings were sent through Ukraine’s air-alert app and appeared on its online map; recorded messages were also broadcast over street loudspeakers.

Fox News - The Russian Emergencies Ministry said a cyberattack enabled attackers to send false information through its mobile application.

(UPDATED November 2, 2026 02:58 UTC)

Ukraine’s hacked air-alert app sent false nuclear and chemical warnings to Kyiv residents, officials said. Authorities said there was no radiation threat, while street loudspeakers also broadcast recorded warnings. Ukraine blamed Russia, while Russia’s Emergencies Ministry reported a separate cyberattack on its app.