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Defence & Security13 Oct 2026 · about 6 min

Ukraine’s Strikes on Yandex Data Centers, Explained

The brief

Yandex’s data centers were hit by drone attacks in a coordinated wave that disrupted the company’s digital services. The strikes mattered because these facilities support apps, websites, cloud customers, and other services used by millions of Russians each day. On October 9, Yandex said two centers had been struck. One was in Sasovo, southeast of Moscow, and the other was in the Kaluga region, southwest of the capital. A third facility, in the suburbs of Vladimir east of Moscow, was hit before the weekend ended. The damage was severe. Yandex said operations in Sasovo were completely halted, while part of its Kaluga infrastructure was disabled. The Vladimir center was later taken fully offline. The attacks also injured nine people in Kaluga and left about 1,600 customers without electricity in Vladimir.

01

What happened to Yandex’s data centers, and where were the strikes?

Yandex’s data centers were hit by drone attacks in a coordinated wave that disrupted the company’s digital services. The strikes mattered because these facilities support apps, websites, cloud customers, and other services used by millions of Russians each day.

On October 9, Yandex said two centers had been struck. One was in Sasovo, southeast of Moscow, and the other was in the Kaluga region, southwest of the capital. A third facility, in the suburbs of Vladimir east of Moscow, was hit before the weekend ended.

The damage was severe. Yandex said operations in Sasovo were completely halted, while part of its Kaluga infrastructure was disabled. The Vladimir center was later taken fully offline. The attacks also injured nine people in Kaluga and left about 1,600 customers without electricity in Vladimir.

02

What is Yandex, and why is it sometimes called “Russia’s Google”?

Yandex is Russia’s largest technology company and a central provider of digital services. Its broad reach explains the nickname “Russia’s Google.” Like Google, it combines many everyday tools under one company, making an outage much bigger than losing access to a single website or app.

Its products include a browser, maps, payments, email, and a virtual workspace. Yandex Go combines taxi rides and food delivery, performing roles similar to Uber and DoorDash. The company also operates Yandex Cloud, which supplies digital infrastructure to other businesses.

The comparison with Google is useful, but Yandex may be even more dominant inside Russia. Millions of people use its services daily, while its cloud platform supports more than 64,000 customers. That concentration means damage to Yandex can quickly spread across households, drivers, retailers, restaurants, and other companies.

03

How many Yandex facilities were hit, and how many businesses and users depend on its services?

The attacks hit three Yandex facilities: one in Sasovo, one in the Kaluga region, and one near Vladimir. These centers matter far beyond Yandex itself because they support services used by millions of Russians and provide infrastructure for other companies.

Yandex says its cloud platform has more than 64,000 customers. The article names grocery chain Magnit, fast-food chain Vkusno i Tochka, and appliance retailer M.Video among companies whose websites were reportedly affected. It also describes taxi drivers and users in several countries experiencing problems.

The article does not provide a total count of all businesses or users that depend on Yandex. It does show the network’s scale through millions of daily users, tens of thousands of cloud customers, and reported disruptions in Russia, Kazakhstan, Kyrgyzstan, Uzbekistan, and Armenia.

04

What everyday services were disrupted when Yandex’s data centers went offline?

When Yandex’s data centers went offline, everyday digital services began failing or slowing. The disruption mattered because Yandex combines many functions that people might otherwise obtain from several different companies. Its systems support transport, shopping, communication, payments, and business operations.

Russian-language media reported temporary outages across Yandex apps. Taxi drivers were told to use Google Maps or Waze while servers were repaired. Websites linked to Yandex Cloud, including Magnit, Vkusno i Tochka, and M.Video, were also reportedly affected. Taxi booking problems were reported in Yerevan.

Some services were restored, but interruptions continued into Monday. Users in Kazakhstan, Kyrgyzstan, and Uzbekistan also reported difficulty accessing Yandex apps. The article highlights digital financial services as particularly disruptive, though the provided text ends before detailing those effects.

05

Why did Ukraine say the attacks were retaliation for Russia’s strikes on data centers near Kyiv?

Ukrainian President Volodymyr Zelensky described the Yandex attacks as retaliation for Russian strikes on similar facilities. The claim places the attacks within a widening technology and infrastructure campaign, rather than treating them as isolated damage to one company.

Last month, Moscow struck data centers in the Kyiv region. Those attacks caused temporary internet outages for roughly 100,000 households. Moscow said the facilities it targeted were used by Ukrainian military intelligence bodies. Zelensky presented the later attacks against Yandex as a response to that earlier action.

The strikes mark a new phase in Ukraine’s air campaign against Russia, according to the article. Ukraine has increasingly targeted infrastructure important to large Russian businesses. Targeting data centers expands that strategy into digital infrastructure, where damage can affect companies and ordinary users far from the strike locations.

06

Why can damage to one company’s data centers affect other companies, such as retailers, restaurants, and taxi services?

A data center can support many businesses at once. Yandex Cloud provides digital infrastructure for some of Russia’s largest companies, so an outage at Yandex can become an outage for its customers too. This makes the damage wider than the physical facilities themselves.

The mechanism is shared dependence. Websites, apps, and other digital systems hosted through Yandex Cloud may rely on the affected centers to store data, run software, or handle online requests. The article reports problems for Magnit, Vkusno i Tochka, and M.Video after Yandex facilities were damaged.

The same pattern affected transport services. Yandex Go users and taxi drivers faced interruptions, while some drivers were told to use Google Maps or Waze. The incident shows how concentrated digital infrastructure can spread a local physical attack across retailers, restaurants, taxi services, and users in several countries.

07

What is a data center, and how does it keep websites, apps, payments, and cloud services running?

A data center is a secure facility containing computer servers, storage systems, networking equipment, and the power and cooling needed to keep them running. These systems store information and process requests from websites, apps, payment services, and cloud customers. The article describes data centers as the backbone of Yandex’s operations.

When someone opens an app or website, the service may depend on servers in a data center to retrieve information, process an action, or connect users with a business. Yandex Cloud extends this function to outside companies. If a facility loses power, connectivity, or operating equipment, dependent services can slow down or go offline.

That is why damage at three locations disrupted more than Yandex’s own products. The company reported halted or disabled infrastructure, while customers and users reported outages. Yandex worked around the clock to restore services, but interruptions continued after some apps returned.

This brief was written by AI from the original reporting and checked by other models. Names, figures and quotes come from the source; read it for full context.

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