Ukrainian Drones Cripple Three Major Yandex Data Centers in Four Days

Ukrainian drone strikes between October 7 and 11 disabled three of Yandex's six largest data centers, including facilities in Sasovo, Kaluga, and Vladimir. The Sasovo site housed two of the company's three supercomputers used to train AI models like YandexGPT, and satellite imagery confirmed the data center wing burned completely. Yandex stated it could not yet determine if the equipment could be restored, effectively removing a major Russian AI computing hub overnight.

The vulnerability extends beyond Yandex. On October 14, a strike hit Sberbank's Mega Data Center in Balakovo, Saratov region, a facility slated to become Russia's largest. Pro-war channels accused both companies of inaction, though Meduza reports authorities had discussed defense measures with businesses prior to the attacks. Video evidence shows mobile fire teams or automatic turrets engaged drones at Yandex sites, but failed to prevent catastrophic damage.

“A weapon that dazzles on the test range becomes a liability when its supply line fails in combat.”

The strikes reveal Russia lacks resources for a multilayered anti-drone air defense system outside the Moscow region. Site-level defenses at individual facilities cannot repel massed strikes, leaving critical digital infrastructure exposed. The Cybersecurity and Infrastructure Security Agency identifies energy and communications as fundamental to practically every other critical infrastructure sector, a vulnerability reaching well beyond Russia.