Emergency-alert systems in Russia and Ukraine were hit by cyberattacks overnight, broadcasting fake warnings of possible nuclear strikes. Ukraine's Air Alert app also warned of radiation and chemical threats and street fighting; Ukraine's Air Force said the system was hacked after false hazard warnings spread across Kyiv on Sunday. The systems were brought back under control. Dr. Melanie Garson of University College London said such attacks are designed to undermine faith in governments' ability to provide trust.
Reporting from 4 identified publishers across this event arc.
These publishers contributed reporting to the broader event history. Not every source addresses the specific development described above.
How this brief is built: The BriefBrief correlates multiple sources into one evolving event brief, updated as new facts emerge.
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