Russian drones and missiles struck Kyiv data centers over 23–24 September, knocking out internet and hosting providers. The Digital Transformation Ministry said about 100,000 subscribers lost service, NV Business reported.

Russia has widened its air campaign from power plants and warehouses to railways, fuel stations, and now digital infrastructure as it tries to grind down the country's ability to function before another war winter.

"You'd have to destroy 70-80% of Kyiv's buildings"

MiroHost founder and Internet Invest Group head Oleksandr Olshanskyi told NV Business the attack destroyed his own data center.

"Most critically important data and systems have been moved abroad or to the cloud," Olshanskyi said. "If an online store stops working, that's unpleasant but not a tragedy."

He called rumors about a full internet blackout or sharp service price hikes baseless.

"Destroying all internet in a simple way is impossible—you'd have to use nuclear or chemical weapons or destroy 70-80% of buildings in Kyiv," he said.

What Russia hit

The strikes damaged a Kyiv data center housing UTELS switching equipment on 23 September. Overnight into 24 September, Russia destroyed equipment of hosting provider CityHost.UA and the data center housing MiroHost. About 95% of MiroHost's clients operate outside Ukraine and were unaffected, he said. Russia also struck the Pavutyna network's data center. Crazy Network said a missile struck Kyiv's central traffic exchange hub, cutting service for its subscribers in Vinnytsia, Kyiv, and Khmelnytskyi Oblast.

Providers KIEVNET, Domonet, FAUST, and Etherlink also reported disruptions. Ukraine's telecom regulator NKEK said on 24 September that providers were completing emergency restoration, and Domonet estimated service would return by 21:00 that evening.

The 23 September strikes killed two people and injured more than 40, and hit a college building in Kyiv while students were on campus, Ukrainian Foreign Minister Andrii Sybiha wrote that evening. Russia targeted major Ukrainian data centers "seeking to disrupt the flow of information," he said. "This is critical civilian infrastructure that ensures people can access life-saving information. It is not a military target."

"More sanctions pressure, more missile interceptors are the only way to stop this terror," Sybiha wrote. "These attacks must not become the new normal."

Panic, not military gain

Olshanskyi said Russia uses these strikes to spread fear, not achieve lasting results.

"The enemy's goal is to cause damage, inflame panic, and heighten nervousness," he said.

His data center's destruction "will not affect the situation at the front in any way," he said.

OpenAI, the US company behind ChatGPT, will hand Ukraine's government free access to a cyber-defense system and its most powerful artificial-intelligence (AI) model, Ukrainian defense outlet Militarnyi reported. The company unveiled the deal alongside the UN General Assembly, pitching it as a cyber shield for the hospitals and power plants Russia keeps targeting.

Russia's war on Ukraine runs through wires as much as skies. Its hackers have hammered energy, transport, and defense networks for years, on top of the blackouts its missiles already force on Ukrainian cities—and Western tech firms have kept stepping in to help hold the line.

What the Daybreak system does

The tool is called Daybreak. It scans digital systems, finds their weak points fast, and helps specialists close them, the report said. Daybreak handles the whole job on its own—a loop of inventory, detection, verification, assignment, remediation, and confirming the fix held.

The system is meant to shield civilian infrastructure, hospitals and power stations among it, from cyberattacks, BBC reported. Ukraine's Computer Emergency Response Team (CERT-UA) logged nearly 6,000 cyberattacks in 2025.

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14 killed as Russia unleashes massive overnight barrage on unprotected Kyiv, striking homes, hospital, school and railway infrastructure

Ukraine also gets OpenAI's top model

The agreement opens access to GPT 5.6 Sol, OpenAI's flagship and strongest model. The company built it for complex professional work—programming, research, science, and cybersecurity, the report said. Both come as part of one agreement between OpenAI and Kyiv.

George Osborne—Britain's former chancellor and now Head of OpenAI for Countries—put the aim plainly.

"Protecting civilian infrastructure means defending it against both physical and digital attacks, so people can continue to live, work and access essential services," he said.

Independent analysts called the deal useful but not unprecedented. Rafe Pilling of cyber firm Sophos said it could serve as a force multiplier for a Ukrainian cyber defense that is already highly capable but heavily burdened. Jamie MacColl of the Royal United Services Institute noted that Western tech firms have been supporting Ukraine for some time, partly altruistically but also because they gain valuable intelligence from an active conflict, and that Ukraine already has access to AI tools from OpenAI's competitors, including Google. The same frontier AI capabilities cut both ways—spotting weaknesses helps defenders block hackers and attackers find a way in.

OpenAI's rival Anthropic has restricted access to its most powerful cyber models on those grounds, while OpenAI has opened them to some European firms and UK banks, BBC reported.