Drone strike shuts Yandex data center in first major attack on Russian AI hub

Reporting Notes

This article synthesizes published sources listed below. Consult those sources for their evidence and scope.

A fire forced the Sasovo site offline

Drones struck a Yandex data center in Sasovo in Russia's Ryazan region, causing a fire and forcing the facility to shut down, Reuters reported. Yandex confirmed an incident at the site, said no one was injured and reported that specialist teams were restoring affected services.

The company said its main consumer services continued operating, although some services could be unavailable. The full extent of the damage and the duration of the shutdown were not disclosed when this report was verified.

The facility supports Yandex's AI operations

The Sasovo complex contains tens of thousands of servers and two Yandex supercomputers used in the development of YandexGPT, according to Reuters. It has operated since 2014 and is connected to Moscow through multiple fibre-optic links.

Taking the site offline therefore affects more than a conventional web-hosting facility. It exposes the physical concentration behind cloud and artificial-intelligence services that are often perceived as distributed and resilient.

Rows of server racks inside a data center — Photo: Carl Lender · CC BY 2.0 — File photo: server racks inside a data center.

Digital infrastructure joins the target set

Drone attacks in the Russia-Ukraine war have repeatedly targeted energy installations, factories, ports and transport infrastructure. Reuters described the Sasovo incident as the first major strike on a Russian data hub, extending that pattern into a sector central to communications and AI development.

Several Russian online services reported disruptions around the time of the attack, but not every outage could be independently linked to the data-center shutdown. Neither the origin of the drones nor operational responsibility was conclusively established in the available reporting.

Resilience now includes physical protection

Russia has moved to strengthen state powers over infrastructure judged inadequately protected, while Ukraine has sought to move some digital assets underground. Both approaches reflect a wider shift in which server capacity, fibre routes and power supplies are treated as wartime strategic assets.

For Yandex, the immediate test is restoring capacity without interrupting widely used search, transport and business services. The longer-term question is whether Russian technology companies disperse more computing infrastructure as the range and precision of drone attacks grow.