Yandex Cloud After Data Center Attacks: How Much Client Data Was Lost

Yandex said on November 10, 2026 that its engineers have regained access to 97.16% of client data in Yandex Cloud after the attacks on its data centers. The other 2.84% could not be recovered. At the same time, the cloud switched on automatic backups by default.

There are two reasons for the loss: severe damage to the hardware, and clients having no copies of their own on the platform. Customers who used Yandex Cloud’s built-in backup tools lost nothing: all 100% of their data survived.

Before, backup copies had to be turned on by hand. Now a new virtual machine starts copying automatically, and the price is unchanged. Clients can opt out, but Yandex calls backup the main safeguard against unexpected failures. In parallel, the cloud’s resources are being spread across new independent locations in different regions of Russia, and their number will keep growing. Tom’s Hardware ties the attacks on the data centers to Ukrainian drone strikes.

Yandex Cloud is the cloud arm of Yandex, Russia’s largest search engine, and has been commercially available since 2018. It is one of the main cloud providers in Russia, so even a few percent of lost client data affects a great many businesses. KRAKOBIT has already looked at what happened to Yandex Cloud client data after the attacks.

Source: Яндекс, пресс-релиз