Technology

Yandex says Ukrainian strikes caused permanent loss of 2.84% of customer data

Slashdot reports that Yandex says Ukrainian drone strikes on three data centers made lost data unrecoverable.

Published Nov 11, 2026 · 23:50 UTC1 reports

The short version

Yandex says Ukrainian drone strikes on three Russian data centers permanently lost 2.84% of customer data.[Slashdot]
The company says recovery is impossible due to critical equipment damage and no platform backups.[Slashdot]
Customers who had enabled the platform's backup tools reportedly kept all of their data.[Slashdot]
Strikes reportedly hit Ryazan on October 8, Kaluga on October 9, and Vladimir on October 11.[Slashdot]

Yandex reported that 2.84% of customer data was permanently lost following Ukrainian strikes on its data centers.[Slashdot]
Yandex says recovery is impossible due to critical equipment damage and the lack of backup copies on the platform.[Slashdot]
Yandex stated that customers who had enabled the platform's backup tools experienced no data loss.[Slashdot]
Drone strikes targeted three Yandex data centers in Russia over four days, beginning October 8 in the Ryazan region.[Slashdot]
A second attack hit Yandex's largest data center in the Kaluga region on October 9.[Slashdot]
A third strike on October 11 targeted a facility in the Vladimir region.[Slashdot]

The loss figures and recovery claims are company statements relayed by Slashdot and UNITED24 Media; no independent verification is provided.[Slashdot]
The provided coverage does not include a Ukrainian government response to the attribution of the strikes.[Slashdot]

Outlet counts describe coverage, not independent confirmation. Reports may share a wire service or original source.