Yandex admits it cannot restore nearly 3% of customer data in Yandex Cloud after Ukrainian attacks
Yandex said it has been unable to restore access to 2.8% of customer data stored in Yandex Cloud following Ukrainian attacks on its data centers.
“Engineers managed to restore access to 97.16% of customer data in Yandex Cloud after the attacks on the data centers. The remaining 2.84% cannot be restored because of critical damage to equipment and the fact that those customers had no backups on the platform,” Yandex’s press service said.
According to a report on Yandex Cloud’s 2025 results, the lost data could amount to roughly 100,000 terabytes and tens of millions of files.
Yandex said customers who used its cloud backup tools lost no data: all of it, 100%, was preserved.
Ukraine began striking Yandex’s data centers in October. Over the course of a week, Ukrainian drones attacked three of the company’s six data centers: in Sasovo in the Ryazan region, in Kaluga, and in Vladimir. The Russian business daily Kommersant reported, citing experts’ estimates, that replacing the damaged equipment at Yandex’s data centers would take about six months. After the Ukrainian attacks, Yandex moved all three of its supercomputers to a new location and withdrew its annual revenue forecast.
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