October 8–9, 2026: Ukrainian strikes hit Yandex data centers in Sasovo (Ryazan) and Kaluga. Sasovo hosts two of three supercomputers used for YandexGPT training (Nvidia A100-based, per 2021 disclosures); Yandex has not confirmed supercomputer damage.
Kaluga strike disabled several modules at Yandex’s largest facility. Disruptions affected Yandex services and customers including Russian Railways and MegaFon. Yandex shares fell ~4% on the Moscow exchange after the second strike.
Reporting frames strikes as response to Russian drone campaigns targeting Ukrainian data infrastructure since late September. Firepoint said FP-1 drones were involved in the Kaluga attack per Reuters.