The site stopped
A data centre operated by Yandex in Russia’s Ryazan region was struck on Thursday 8 October, starting a fire. NBC News, citing Reuters, reports that the fire forced the company to fully suspend the centre’s operations, and describes the strike as the first major attack on a Russian data hub, noting that there had previously been no confirmed major Ukrainian drone attacks on Russian data centres. No injuries were reported.
NBC describes Yandex as Russia’s leading artificial intelligence and technology company. That is the part that makes this more than a wartime infrastructure story: a national AI champion has lost a site, in a conflict where data centres had so far been something you built rather than something you hit.
What Yandex has and has not said
Yandex acknowledged a power outage at one facility on Telegram but did not publicly link it to a drone strike. It said it had moved workloads to other facilities, which were operating normally, with some restrictions remaining. Its own words on the remaining limits: “The ability to create new resources in our cloud infrastructure may currently be limited.”
Yandex Cloud reported electricity supply problems in one data centre zone and recommended that customers use other zones. The company said its core consumer services were not affected, and that it was dealing with the consequences and restoring affected services.
What went down anyway
The outage reached further than the official account suggests. Yandex Cloud customers lost access to computing resources, networks, data storage and databases. Russian media reported problems with Yandex Disk and Yandex Documents. Several Russian websites went with it, including a social media management platform and the Ryazan regional edition of Komsomolskaya Pravda.
The monitoring group NetBlocks reported a significant disruption to Yandex’s network, with connectivity at around 70% of normal levels.
Nobody is confirming what was aimed at
Eyewitness photos and videos on Telegram appeared to show a fire at a machine-tool manufacturing plant that houses one of Yandex’s data centres. The plant has been under British sanctions since 2024. It is not clear whether the data centre, the plant, or both were the target.
Russia’s defence ministry said its air defences intercepted Ukrainian drones over several regions including Ryazan, while local authorities reported no damage. Ukraine’s military has not publicly commented.
What this changes
The strike follows a wave of Russian attacks on Ukrainian data centres in recent weeks, so the direction of travel is not new — the scale of the target is. A data centre is a single building with a single power feed and a very large concentration of value, which is a poor combination under drones.
The thing to watch is whether Yandex can restore the site at all, and whether the rest of the industry starts pricing a risk it has never had to carry: that the limiting factor on a region’s AI capacity might be air defence rather than power or chips.
