Overnight on November 2, unknown attackers targeted emergency alert mobile apps in Russia and Ukraine. Users received false warnings about nuclear, radiation and chemical threats.
Russia’s Ministry of Emergency Situations said the attackers breached the administration panel of its mobile app and, at around 2:45 a.m. Moscow time, sent a false message to 33 federal subjects. The messages claimed that nuclear warheads had allegedly been launched at Russian regions and urged people to take shelter in basements and stock up on food and water. Available information indicates that the false notifications also appeared in the Telegram channels of regional ministry offices in at least nine regions, including Moscow and St. Petersburg.

The ministry stressed that the attack did not affect the main public alert system, which operates through sirens, SMS, television and radio. The mobile app serves only as an additional channel. The ministry urged people not to spread false information and to verify threat warnings through official channels.
Almost simultaneously, Ukraine’s Air Raid Alert app was breached. Users received false warnings about radiation and chemical hazards and street fighting, as well as a message in Russian about an alleged impending strike with an Oreshnik missile. Ukraine’s Air Force said the app had probably been hacked and stressed that there was no radiation threat. The developers confirmed unauthorized interference, temporarily disabled notifications and then restored the app.
The perpetrators have not been officially identified. Several media outlets mentioned the hacking group Hitcore, which allegedly claimed responsibility, but this information could not be verified. There is no information indicating that the same people carried out both attacks.