Fake nuclear warnings in Ukraine as Moscow, Kyiv report separate cyberattacks on emergency apps

Ukraine's Air Force said Sunday its Air Alert app had been compromised after it reportedly sent false warnings of nuclear and chemical threats in Kyiv and other areas.The app briefly displayed alerts for nuclear and chemical incidents, as well as warnings of street fighting, according to Reuters. The Air Force said unauthorized persons had interfered with the app's operation and that it had temporarily disabled push notifications."There is no radiation threat! Stay calm, follow our messages on our channel," the Air Force said on Telegram, according to a translation.Two hours later, Russia's Ministry for Emergency Situations said its mobile app had been subject to "a massive cyberattack, allowing attackers to send fake information to the public."It was not immediately clear if the incidents were linked. CNBC has reached out to Russian and Ukrainian authorities for comment. Local ceasefire expires in Oleshky, KhersonThe alleged cyberattacks come as Russia and Ukraine continue to trade strikes on each other's territories and infrastructure. Overnight, a local ceasefire in the devastated Russian-occupied city of Oleshky and surrounding areas in the Kherson region, near the Crimean Peni...