Yandex irretrievably lost some customer data after the drone attacks.
The company admitted that it is no longer possible to recover 2.84% of customer data in Yandex Cloud. The reason was critical damage to the data center equipment after the drone attacks in October.
Engineers were able to regain access to the remaining 97.16% of the information. At the same time, the data of the users who created backup copies in advance were completely preserved.
After the incident, Yandex decided to change the rules: now when creating new virtual machines in Yandex Cloud, the backup will be activated by default.