Yandex Cloud Failover Falters After Drone Attacks On Three Data Centers
The outages show that even a large operator's backup systems can fail to carry traffic after physical strikes on data centers, a risk that has moved from theory to practice.
Reporting from 1 source: GIGAZINE.
Drone attacks took Yandex data centers offline in Sasovo on October 8, 2026, in Kaluga Oblast on the 9th, and in Vladimir Oblast on the 10th. Yandex Cloud's status page showed 84 services unavailable as of October 11. Yandex says repair crews are working around the clock and partial recovery is progressing, but services still ran in limited mode as of the 13th.
Yandex Cloud's failover to backup systems did not work as intended after drone attacks damaged three of the company's data centers, and the disruption has stretched past the week of the strikes. Cloudflare traced bot traffic from AS13238, one of Yandex's CDNs, from more than 80 percent of HTTP requests in late September to the 50 percent range by the morning of October 8, then to the 0 percent range over two hours up to 1:00 on October 11. It has since returned to single digits. Repair work continues around the clock.
Synthesized by Yomimono from the 1 cited source below, including Japanese-language reporting where cited, then editorially reviewed before publishing.