The Emergency Ministry in Moscow says there has been a "massive cyber-attack" on its alerts app that would enable attackers to send false information

The app for a ⁠short time ​showed Kyiv and ​other areas subject to a nuclear alert.

Residents of Kyiv received warnings of a “nuclear danger” late on Sunday through the air raid alert app, which millions of Ukrainians rely on for information about incoming Russian missile and drone s...