Ukraine's air raid alert app hacked, sending false nuclear and radiation warnings

Ukraine's air raid alert app was hacked on Sunday, sending false warnings of nuclear, chemical and street-fighting threats across the country.

• Hackers used the app to send warnings of a nuclear attack, radiation threat, chemical attack and street fighting in Kyiv on Sunday.
• The Ukrainian Air Force said the alert system had probably been subjected to hostile interference and stated there was no radiation threat.
• Ukraine's Central Intelligence Agency said the app had failed and urged residents to rely on official sources for air strike alerts.
• Vinnytsia governor Natalya Zabolotna stated that a cyberattack had occurred and warned residents not to click links in the messages.