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A Ukrainian drone attack started a fire at a Yandex data center in Sasovo, Ryazan region, and the facility has halted operations. Yandex warned that some services could be unavailable, but the company has not reported the condition of the two supercomputers housed there or said whether they were damaged.
A Ukrainian drone attack started a fire at a Yandex data center in Sasovo, in Russia’s Ryazan region, halting operations at the facility and prompting warnings of possible service outages. No injuries were reported, but the site houses two of Yandex’s three supercomputers, and the company has not said whether either system was damaged.
The fire began on the grounds of the Sasta machine-tool plant, where the data center occupies part of the plant’s former premises. Ryazan region authorities said the roof of “one of the enterprises” caught fire after the attack but did not name Sasta, according to Meduza. The facility has completely halted operations, the report said.
Yandex warned that some of its services may be unavailable. Users reported problems with Yandex services, including Yandex Cloud and services that depend on it, such as Yandex Disk and Yandex Documents. Outages were also reported on the websites of Cian, Russian Railways and administrations in several regions. The available reporting does not establish that every reported outage was caused by the data center shutdown.
Shares of Yandex, one of Russia’s leading IT companies, fell more than 3% amid the strike, according to Moscow Exchange data cited by Meduza. The report identifies no injuries and confirms the shutdown, but gives no account of damage inside the data center.
Yandex Services Face Disruption
The shutdown matters because the Sasovo site supports Yandex’s computing infrastructure and holds two of its three supercomputers, which the company uses to train neural networks. Disruption at the facility may affect services that rely on its data center, though the scale and duration of any customer impact have not been confirmed.
The incident also reaches beyond Yandex. Reports of problems at Russian Railways, Cian and regional government websites point to a wider set of reported disruptions, but the available account does not confirm the technical cause of each outage. The reported share-price decline signals an immediate market reaction; it does not establish the longer-term financial effect.
The site’s location adds another dimension. Sasta manufactures pipe-threading machines for export and for machine-building plants across Russia. The independent Telegram channel Astra says the plant also provides a production base for defense enterprises; Meduza reports that Western countries have placed Sasta on sanctions lists. Those details describe the industrial setting but do not establish what the attack was intended to hit.
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The Sasovo Site and Its Systems
Yandex’s data center has occupied part of Sasta’s former premises since 2014. In September, employees showed the facility’s equipment and said they worked in Sasovo, Meduza reported.
The center houses Lyapunov and Chervonenkis, two systems used to train neural networks. T-invariant, an independent science-focused outlet cited by Meduza, described Chervonenkis as Yandex’s most powerful supercomputer. It ranked 19th in the global Top 500 list in 2021, then fell into the second hundred as sanctions made infrastructure upgrades difficult, according to the report. Yandex’s third supercomputer, Galushkin, is located in Vladimir.
The strike came amid reports of attacks on Ukrainian data centers by Russian forces. Meduza says at least eight companies’ data centers in Ukraine had been damaged or destroyed since September 23, with some attacked more than once. Russia’s Defense Ministry claimed those centers processed and transmitted intelligence data for Ukraine’s armed forces. Meduza describes the strikes as part of a broader campaign against Ukrainian infrastructure; that is its characterization, while the ministry’s explanation is an official Russian claim.
“The roof of “one of the enterprises” caught fire after the Ukrainian attack.”
— Ryazan region authorities, as quoted by Meduza
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Damage and Target Remain Unknown
Yandex has not reported the condition of Lyapunov or Chervonenkis after the fire. It is also unclear how much physical damage the data center sustained, when it might resume operations, and which reported service outages stemmed directly from the shutdown.
The intended target is also unknown. The attack struck the grounds of Sasta, where Yandex’s facility is located, but the reporting does not establish whether the plant, the data center or another part of the site was the target. Ukraine has not officially commented on the strike, according to Meduza.
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Updates on Recovery and Damage
The next key information will be an update from Yandex on the facility’s condition, the two supercomputers and the expected duration of the shutdown. Further company statements may also clarify which services are affected and when they will return to normal.
Authorities could provide more detail about the fire and damage at the site. Until then, the full operational impact, the source of all reported outages and the intended target remain unconfirmed.
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Key Questions
What happened at the Yandex data center?
A Ukrainian drone attack started a fire at a Yandex data center in Sasovo, Ryazan region. The facility halted operations, and no injuries were reported.
Were Yandex’s supercomputers damaged?
That has not been reported. The Sasovo center houses Lyapunov and Chervonenkis, but Yandex has not provided information about their condition after the strike.
Which services have reported problems?
Users reported problems with Yandex services, including Yandex Cloud, Yandex Disk and Yandex Documents. Outages were also reported at Cian, Russian Railways and several regional administration websites. The reporting does not confirm that the data center shutdown caused every outage.
Is it known what the attack was targeting?
No. The strike hit the grounds of the Sasta plant, which contains the data center, but it is unclear whether the plant or data center was the intended target. Ukraine has not officially commented, according to Meduza.
Source: rss
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