Ukraine's air alert app apparently hacked: Kyiv residents receive fake warnings of street fighting, chemical attack and radiation Screenshots shared by Ukrainian Telegram channels show the air alert app sending users in Kyiv warnings of street fighting, chemical attack and radiation danger around 10:49 p.m. local time. A minute before, a message appeared in the application written in Russian: "Hello! Now a nuclear alert will be sounded throughout Ukraine! Don't worry, the Orshanik is on its way! "It also included a link to a Telegram channel, which suggests a hack, and Ukrainian channels say the app was apparently compromised.