Russian data centers hosting critical artificial intelligence infrastructure have come under a series of drone attacks by Ukrainian forces, raising concerns about the future of Moscow’s AI ambitions. Over four days in late October 2026, Ukrainian drones struck three key data centers operated by Yandex—the nation’s largest IT company—in the cities of Sasovo, Kaluga, and Vladimir, igniting fires that disrupted digital services and targeted Russia’s most powerful supercomputers.

The data centers housed tens of thousands of servers supporting various Yandex services, including the neural networks that power YandexGPT, one of Russia’s leading large language models. Among the damaged or threatened equipment were the Chervonenkis, Lyapunov, and Galushkin supercomputers, named after prominent Soviet and Russian scientists. These machines, built prior to the 2022 full-scale invasion of Ukraine, utilized advanced AMD processors and Nvidia accelerators—hardware critical for AI training but increasingly difficult for Russia to replace due to Western sanctions.

Yandex confirmed that while the supercomputers were not directly damaged, the affected units were relocated to undisclosed, presumably more secure sites. Experts, however, warn that the repeated targeting of large data centers poses significant challenges, as rebuilding and reestablishing complex AI systems is costly, time-consuming, and vulnerable to further strikes.

These attacks represent a new phase in Ukraine’s military strategy aimed at disrupting Russia’s digital infrastructure as retaliation for Russian strikes against Ukrainian data centers earlier this year. Ukraine’s President Volodymyr Zelensky cited the Russian attacks on Kyivstar and other Ukrainian providers in September, describing the targeting of Yandex as a calibrated response to Russia’s operations against Ukrainian digital assets. Russian officials, including the Defense Ministry, have justified their strikes on Ukrainian data centers by asserting their role in transmitting intelligence for the Ukrainian military.

Prior to the attacks, Russian officials acknowledged the vulnerability of data centers concentrated mainly in the Moscow region—home to roughly 80 percent of the country’s active centers—with St. Petersburg hosting about 7 percent. Deputy Minister of Digital Development Evgeny Filatov signaled intentions to relocate vital computing resources out of major urban centers to reduce exposure but acknowledged the logistical difficulties involved.

Proposals to protect critical facilities by relocating them to underground bunkers have been met with skepticism from industry experts, citing the substantial costs and logistical hurdles of such moves. Data centers require extensive ventilation and power supplies that are challenging to replicate underground, and auxiliary infrastructure such as power grids would remain susceptible to disruption.

The strikes also undermine President Vladimir Putin’s longstanding policy of developing “sovereign AI,” an initiative to build Russia’s AI capabilities independently of foreign technology. The policy emphasizes the use of exclusively Russian components and data storage within national borders, a stance complicated by mounting sanctions that have severed access to vital Western chips and technologies. Since the 2022 invasion, many Russian AI projects have suffered setbacks as talent has emigrated and access to advanced hardware has become restricted.

While Russia possesses favorable conditions for data center operation, including low energy costs and cold climates, the concentration of infrastructure in vulnerable locations and dependence on scarce hardware strains the country’s AI development prospects. Analysts note that despite Russia’s earlier ambitions to compete in the global AI race—with notable projects like Sberbank’s ruGPT models and Yandex’s supercomputing assets—the ongoing conflict, sanctions, and targeted attacks have set back progress by years.

As the conflict continues, the intersection of warfare and technology is intensifying, with digital infrastructure becoming a new battleground. Both Russia and Ukraine appear poised to continue targeting each other’s data centers, underscoring the strategic importance of control over information and AI capabilities in the protracted conflict.