Ukrainian drones hit three of Russian tech giant Yandex’s data centers in four days. Ukraine’s president says the bots thinned out too

Ukraine’s drone strikes on Russian tech giant Yandex thinned out social media bots, Ukrainian President Volodymyr Zelenskyy said on 12 October. Network data do show Yandex’s automated traffic collapsing after the strikes. Disinformation researchers say that traffic is search crawling, not trolls. A Ukrainian social media monitor told Euromaidan Press its own data show no clear drop in bot activity either.

Russian influence operations are a live threat to European votes. In August, the Matryoshka network fabricated news clips aimed at Sweden’s general election. German and French authorities flagged the same network targeting Germany’s local votes and French presidential hopeful Gabriel Attal. A way to switch such networks off would hand allies a new tool, which is why the claim needs testing.

The president’s claim

Addressing the Warsaw Security Forum by video link, Zelenskyy said that once Ukraine began answering Russia’s operation against Ukrainian data centers and its strikes reached Yandex, many social media platforms suddenly became a little easier to breathe on.

Many people noticed less hatred, discord, and provocation because there were fewer bots, he said. It was quite clear where those bots came from, he noted. Their disappearance once Yandex went down proves again that Europe is not the source of the problems, he added.

Lithuanian Prime Minister Mindaugas Sinkevičius said at the same forum that allies should ask Zelenskyy to strike more data centers in Russia, answering a question on how to protect their elections from interference.

Three data centers in four days

Drones first hit Yandex’s data center in Sasovo, Ryazan Oblast, on 8 October. Yandex said it shut the site down completely. The next day, a strike on its Kaluga site completely disabled several modules, the company said. Yandex calls Kaluga its largest data center, Russian science outlet T-Invariant noted.

Ukrainian drone maker Fire Point said its FP-1 long-range drones carried out that strike.

After the first strike, on Sasovo, a source at Yandex summed up the mood for The Bell: “Things are rotten. We keep working.”

Overnight on 11 October, drones hit the third site, in Vladimir. Yandex said it fully halted that data center too. Vladimir Oblast Governor Aleksandr Avdeev acknowledged an attack on “infrastructure” near the city. It started a fire and cut power to two substations serving 5,000 residents, he claimed.

Dima, have you tried turning it off and on again?

— Fire Point (@FirePointUA) October 11, 2026

What the traffic data show

Automated web requests from Yandex’s network fell to 0.4% of their two-week peak after the third strike, Cloudflare Radar data showed, Cybernews reported. That chart counts automated requests to websites, mostly from Yandex’s own search crawlers. It does not count social media posts.

The chart “has nothing to do with social media,” the Russian opposition analysis group Antibot4navalny wrote.

To those implying that Kremlin-controlled social media bot/troll farms became silent after Ukraine hit a Yandex data center, posting this CloudFare chart ( radar.cloudflare.com/bots/as13238 ):Hate to disappoint you all

— antibot4navalny | bot blocker | блокировщик ботов (@antibot4navalny.bsky.social) 2026-10-11T20:54:52.717Z

Russia’s overall bot traffic last week looked much like any other week. Yandex’s own figure began recovering on Sunday. Covert troll farms usually hide behind residential proxies, hacked devices, virtual private networks (VPNs), and Western cloud providers, the outlet added.

What Ukrainian social media shows so far

Yevhen Luzan tracks Ukrainian social media sentiment as an analyst at the Ukrainian nonprofit CAT-UA. Its daily reviews sample about 500 random posts. On 11 October, that sample showed an unusually small share of posts criticizing Ukraine’s authorities, he told Euromaidan Press. Accounts showing signs of bot activity made up only a few tenths of a percent of that criticism. That is within the margin of error.

The same day, though, US President Donald Trump’s deal for Russian diesel supplies dominated Ukrainian feeds. Luzan said a rally-around-the-flag effect could explain the shift, as outrage at Washington crowded out domestic stories.

“To state it definitively and draw a cause-and-effect link from this correlation would be too bold,” he said.

Across the wider pool of about 10,000 daily mentions, CAT-UA sees no significant drop in posting activity in recent days. The curve shows only the usual rises and dips around the start and end of the week, Luzan said.

“For now, even a hypothetical drop in bot farm activity dissolves entirely in the natural fluctuations of the information space,” he said.

How a crawler chart became a bot story

The claim that Russian social media bots fell by half is unproven and built on a misread chart, disinformation analyst Joohn Choe concluded in a fact-check. It traces back to an 8 October post by security researcher Jeremiah Fowler. That post said Russian bot traffic had dropped to 49%. On 11 October, radio reporter Jamie Dupree spread it on X. Tom’s Hardware then ran it under a headline calling the crawler traffic “Russian disinformation bot traffic,” wording it has since changed.

According to Cloudflare Data Explorer the amount of russian bot traffic has dropped to 49% after Ukraine struck a yandex data center. Could this disrupt the midterm elections in the US? pic.twitter.com/SRtMyjaV22

— Jeremiah Fowler Security Researcher (@yoda69) October 8, 2026

Ukrainian military analyst Tatarigami claimed that Texas separatist accounts with identical “Veteran, Christian, Father, MAGA” bios had gone quiet. He said Quebec separatists and Polish anti-EU accounts went quiet alongside them.

Polish military analyst Jarosław Wolski claimed that AfD’s online support fell 56%, posting a chart without naming its source. Another X user said “Polish” bots had vanished.

Zderusyfikowany internet (ukraińskie trafienia w centra Yandexa) nagle objawia cuda w socjalach: poparcie dla AfD w socjalmediach spadło o 56%. Mniej "polskich" kont szczujących na Ukraińców, mniej "ukraińskich" szczujących na Polaków, poparcie w sieci dla MAGA gwałtownie spadło… pic.twitter.com/zi4rwqNR9I

— Jarosław Wolski (@wolski_jaros) October 11, 2026