A Telegram post reported that several modules of the Yandex data center in Kaluga were disabled following an attack by Ukrainian drones. The company's press service stated that on the previous day, a strike by the Armed Forces of Ukraine (VSU) halted operations at the Yandex data center in the Ryazan region.

The report indicates that the incident in Kaluga involved drone attacks, while the previous day's incident in the Ryazan region was attributed to a strike by the VSU.