From the article:

Ukrainian arms maker Firepoint said Kyiv had used its FP-1 one-way attack drones to mount the strike against what it called Yandex's biggest data centre and said that several of its modules had been completely ​knocked out of action.

A day earlier, a Ukrainian attack shut down Yandex's data hub in Sasovo, southeast of Moscow, where two of the three supercomputers used to develop the company's AI ​model are housed.

Yandex said it was facing a difficult challenge to maintain its services, used by millions of Russians daily for navigation, music, movies, ⁠food orders and other tasks. It also provides cloud computing services on which many businesses depend.

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Yandex said it had struck a deal with other cloud providers to enable clients to swiftly move their data and services. Its shares ​fell by more than 4% on the Moscow exchange.

"The risks involve not only the potential temporary unavailability of Yandex services and lost revenue in specific segments but also the company's extensive base ​of B2B clients," said Maryana Lazaricheva, head of equity research at T-Investments.

[...]

The full scale of the disruption caused by the attacks was not immediately clear, although messages appeared on at least one Yandex app warning of potential problems in its operation.

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Yandex operates five data centres, two of which have already been hit. It said in 2021 that the Sasovo data hub, which was struck on Thursday, hosted two of its three supercomputers built around Nvidia A100 chips, which it uses to train its ⁠YandexGPT large AI ​model. Yandex has declined to say whether the supercomputers were affected by the attack.

Multiple online services in Russia reported ​technical issues on Thursday, including real estate aggregator Cian, a book portal called Litmarket, and the websites of Russian Railways and professional football club Spartak Moscow.

Russian attacks on Ukrainian data centres have forced some of them to suspend operations, while 100,000 ​households suffered temporary internet outages after one attack. Ukraine's digital minister told Reuters last month that the country was responding by moving digital infrastructure underground.