Drone strikes damage two Yandex data centers in Russia

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  Drones attacked Yandex data centers in Sasovo, in Russia’s Ryazan region, and Kaluga in two consecutive days, according to the company and news reports.

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  Yandex said the Sasovo facility was seriously damaged and its operations were completely suspended; the attack on the Kaluga site disabled several modules.

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  Yandex warned that some services could be disrupted and said it was working to keep them running, but the full impact and recovery time were unclear.

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  Yandex reported no injuries among its employees, while Kaluga’s governor said nine people were injured in attacks on infrastructure in the region.

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  Ukraine has not publicly confirmed responsibility for the Kaluga strike; President Volodymyr Zelensky said Ukraine had responded to Russian attacks on Ukrainian data centers.

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  The BBC reported that Yandex’s Kaluga data center covers about 130,000 square meters, while the Sasovo site contains two of the company’s three AI-development supercomputers.

Who

Yandex; Ukrainian drones are reported to have carried out the attacks, but Ukraine has not publicly confirmed responsibility for the Kaluga strike.

What

Drone attacks damaged Yandex data centers in Sasovo and Kaluga, disrupting or threatening the company’s services.

When

Overnight into October 8 and overnight into October 9, 2026.

Where

Sasovo in Russia’s Ryazan region and Kaluga in Russia’s Kaluga region.

Why

Zelensky said the attacks were retaliation for Russian strikes on Ukrainian data centers; the stated rationale for the Kaluga strike was not independently confirmed.

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