The key facts

  • The attacks on the data centers occurred on the night of October 8, on October 9, and on the night of October 11, 2026
  • The supercomputers 'Chervonenkis', 'Lyapunov', and 'Galushkin', used for training AI models, may have been disabled
  • Outages of Yandex services were reported in Russia and CIS countries, including Uzbekistan

Three attacks in one week

Last week, Ukrainian drones attacked several Yandex data centers, Kun.uz reports. According to the outlet, the strikes may have caused serious damage to the company's databases, and the consequences affected the operation of a number of services in Russia and CIS countries, including Uzbekistan.

Sasovo, Kaluga Region, Vladimir

The first strike, on the night of October 8, hit the data center in the city of Sasovo, Ryazan Region. The facility, opened in 2014, is one of the company's main data processing centers: its electrical capacity reaches 12 megawatts, and its infrastructure includes tens of thousands of servers. After the drone strike, a major fire broke out and the center's operation was temporarily halted, leading to outages in services using Yandex Cloud resources. On October 9, the data center in the Grabtsevo industrial park in Kaluga Region was attacked; it had been commissioned in 2022. The company described it as one of the largest data processing centers in Russia with a design capacity of 63 megawatts; according to Kun.uz, several modules of the facility were completely disabled. On the night of October 11, Ukrainian drones attacked the data center in Vladimir.

Possible damage to AI

According to preliminary estimates, the damage to the data centers may deal a serious blow to the development of artificial intelligence technologies in Russia. Among the biggest losses cited is the failure of three leading supercomputers that were used for training neural networks, large language models, and machine vision systems. The supercomputers Chervonenkis and Lyapunov in Sasovo and Galushkin in Kaluga Region were used for the company's AI development. Chervonenkis is described as the most powerful supercomputer created in Russia over the past 15 years: at its launch in 2021, it ranked 19th in the global TOP500 ranking. Galushkin was intended for tasks requiring high computing power, including training AI models. According to Kun.uz, as a result of the attacks all three supercomputers may have been completely disabled, but there is no full information about their condition or the exact scale of the damage.