Ukrainian drone strikes on Yandex data centers cut bot traffic; Zelensky tells Warsaw forum it became "easier to breathe" online

Why it matters

The strikes disabled three of Yandex's five largest Russian data centers, hitting core infrastructure of the country's leading internet company and producing measurable, externally visible effects: bot traffic collapsing to a fraction of its previous peak, cloud services going dark across six post-Soviet countries, and Russian federal veterinary and pesticide-tracking systems switching to emergency mode. The episode was publicly cited as suggestive evidence that some political bot activity supporting Donald Trump and Germany's AfD may depend on Russian servers, and gave President Zelensky a high-profile platform at the Warsaw Security Forum to argue that the source of bot-driven online hostility lies outside Europe. Recovery is estimated in months, not days.

What happened

Between October 8 and 11, 2026, Ukrainian drones struck three of Yandex's five largest Russian data centers: the facility in Sasovo, Ryazan Oblast on October 8 (where a fire broke out on the grounds of the Sasta machine-building plant and two supercomputers are housed); a larger complex in Kaluga on October 9; and a center in Vladimir, Vladimir Oblast overnight on October 11. Yandex confirmed the full shutdown of the Vladimir data center after the drone attack.

According to Cloudflare data cited by Tom's Hardware, Yandex-linked bot traffic fell to roughly 0.4% of the peak HTTP-request level recorded over the previous two weeks, after dropping to about 57% following the Sasovo strike. The internet-monitoring service NetBlocks reported Yandex Cloud traffic at 30% of normal and LLC Yandex traffic at 63%, while Yandex Cloud's own status page showed at least 84 services down. After the Vladimir strike, outages spread to six countries — Russia, Kazakhstan, Kyrgyzstan, Uzbekistan, Belarus and Armenia — affecting retail, banking, transport and delivery apps. Russia's federal VetIS and Saturn systems (veterinary control and pesticide tracking) switched to emergency mode.

At the Warsaw Security Forum via video link on October 12, President Volodymyr Zelensky said social media had become "easier to breathe" on after the strikes, with fewer bots, less hatred, discord and provocations, and that the disappearance of bots when Yandex stopped working proved "Europe is not the source of problems." American historian Timothy Snyder and Czech MEP Tomasz Zdechovsky (European People's Party) wrote on X that bot activity linked to Donald Trump and Germany's AfD appeared to drop sharply after the strikes, though Snyder called his conclusion preliminary, the source of Zdechovsky's infographic is unknown, and Zdechovsky himself has not confirmed a link. A source cited by Russian outlet Kommersant estimated Yandex could need up to six months to acquire replacement equipment.

How Ukrainian sources describe it

Ukrainian sources uniformly credit the Armed Forces with the October 8, 9 and 11 strikes on the Sasovo, Kaluga and Vladimir Yandex data centers and present the bot-traffic collapse as a strategic success. Coverage centers Zelensky's Warsaw Security Forum remarks — that social media had become "easier to breathe" on and that the episode proves "Europe is not the source of problems" — and highlights Snyder's and Zdechovsky's posts pointing to a possible Russian-infrastructure link for pro-Trump and pro-AfD bot activity, framing the strikes as degrading hostile foreign information operations. Ukrainian outlets also note the collateral reach of the outages (six post-Soviet countries, federal VetIS and Saturn systems in emergency mode) and the Russian IT-market estimate of up to six months for recovery, while contrasting the attack with prior Russian strikes on Ukrainian facilities including Kyiv-based Omega Telecom and DLine.ua.

Where reporting differs

Sources differ on whether the drop in online activity proves a link between pro-AfD and pro-Trump bots and Russian data centers. Timothy Snyder framed it as a preliminary hypothesis and said new data would likely emerge. Tomasz Zdechovsky highlighted a possible link on X but has not himself confirmed it, and the source of his infographic is unknown. The German tech portal Roxtext reported that there is no confirmed data on a link between AfD activity and Russian bots.

Background

Yandex is described as Russia's analogue of Google. The three damaged data centers housed Russian supercomputers Chervonenkis, Lyapunov and Galushkin, built largely on Western, primarily NVIDIA, hardware; the Chervonenkis system ranked 19th in the global TOP500 in 2022 but had fallen to 101st by June 2026, with Galushkin at 134th and Lyapunov at 161st. Russia has continued striking Ukrainian digital infrastructure, including the Kyiv-based Omega Telecom and DLine.ua data centers, and Russian officials cited by an analyst say 17 Ukrainian data centers have been hit, some repeatedly. Starlink does not operate in Russia, limiting satellite-internet alternatives during the outages.