Building an AI data center costs billions. Defending it is another story

Over four days last week, Ukrainian drones struck three data centers operated by Yandex, Russia’s largest technology company. Facilities went offline, disrupting services used by banks, retailers, and ordinary Russians. One of the sites, in Sasovo, housed tens of thousands of servers and two of the supercomputers used to develop Yandex’s AI models. The strikes followed Russian attacks on Ukraine’s own digital infrastructure, including one that left Kyiv’s Parkovyi Data...