Ukraine's airstrike alert system was hacked, sending warnings about chemical and radiation threats to phones across the country. The loudspeaker alert system was also compromised, and it wasn't just the app that played a similar message on the streets of Kyiv.

Ukraine's airstrike alert system was hacked, sending warnings about chemical and radiation threats to phones across the country. The loudspeaker alert system was also compromised, and it wasn't just the app that played a similar message on the streets of Kyiv.