November 5, 2026, 3:46 pm | Read time: 2 minutes
Official warning apps are designed to inform people as quickly as possible about impending dangers in emergencies. In Ukraine and Russia, these systems have now become targets of cyberattacks.
Late Sunday evening, the Ukrainian warning app “Air Alert” issued a warning about radioactive radiation in Kyiv. The Ukrainian Air Force responded via Telegram, warning of possible manipulation of the app. At the same time, the agency clarified that there was no radiation danger.
The incident is particularly sensitive because such apps are supposed to reliably inform the public about acute dangers, especially air raids. If the systems are manipulated, false warnings can be disseminated. This is exactly what apparently happened with “Air Alert.”
Shortly thereafter, Russia is also affected
Just a few hours later, Russia reported a massive cyberattack on its own warning system. According to the Russian Ministry of Civil Defense, attackers sent false information through the app. Additionally, the ministry’s website was temporarily inaccessible. According to media reports, warning sirens sounded in some Russian regions late Sunday evening.
The Russian app also falsely warned of chemical weapon attacks. Authorities then urged the public not to click on links in the corresponding warning messages. Within a few hours, the official warning systems of both warring parties were affected by cyberattacks.
Expert considers further attacks possible
Herbert Lin, a senior researcher in cyber policy and security at Stanford University, described the incident to the BBC as “alarming.” “I think it’s the first time it has happened to an official Ukrainian information app, but I suspect it won’t be the last,” said the 74-year-old. Lin previously served on a commission under former U.S. President Barack Obama to improve national cybersecurity.
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What is particularly striking is the timing of the events: first, the Ukrainian warning app was manipulated, and a few hours later, Russia reported an attack on its own system. Whether the two incidents are directly connected has not yet been proven. Likewise, there is no evidence so far that Ukraine responded to the previous attack with the attack on the Russian warning system.