Yandex Cloud Recovers 97% of Customer Data After Attacks
Yandex says engineers restored 97.16% of client data in Yandex Cloud after drone attacks on its data centers. The remaining 2.84% cannot be recovered.
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giftdetect· the right gift in minutesYandex has restored 97.16% of customer data in Yandex Cloud after attacks on its data centers, the company said. The remaining 2.84% cannot be recovered because of critical hardware damage and because the affected customers had no backups.
Customers who used backup tools lost nothing: all of their data, 100%, was preserved.
Backup now on by default
Yandex Cloud has also changed how it creates virtual machines. Backup is now enabled automatically, though users can switch it off. Yandex calls backup a "basic way to reduce risk in unforeseen circumstances".
What happened
Drones attacked Yandex's data center in Sasovo overnight on 8 October 2026. A strike on Kaluga followed on 9 October, and Vladimir was hit overnight on 11 October. Services run by Yandex and by third-party developers then suffered outages. By the end of October the company had gradually brought most services back.
Engineers are now spreading Yandex Cloud's computing resources across new, independent locations in different regions of Russia. The company says the number of locations will keep growing.
For cloud customers, the episode is a concrete lesson in the value of backups and geographic redundancy. The permanent losses were limited to clients without backups, while those with backup tools came through intact. Distributing capacity across several regions is meant to keep a single site's failure from taking down services on this scale again.
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