Estonia is automatically diverting emails using Russia’s .ru internet domain into quarantine for additional security checks before they reach state institutions connected to the country’s secure government network, Justice and Digital Affairs Minister Liisa Pakosta told Estonia's public broadcaster ERR.

The measure is intended to protect Estonian government computer systems amid a post-2022 surge in cyberattacks that officials link to Russia. It applies only to institutions operating inside the secure state network, leaving local governments and some state bodies outside.

Many Estonian residents, particularly Russian speakers, still use .ru email services, ERR noted. Because the filter is triggered solely by the address ending, legitimate messages will be screened alongside potentially malicious ones and may take longer to arrive.

Pakosta said the safeguard was necessary because cyberattacks against Estonia had increased “exponentially” since 2022 and that many were linked to Russia. She said such attacks had not succeeded against Estonia, while major public-sector cyberattacks had succeeded in both Latvia and Lithuania.

The rerouting is automatic and handled centrally, so agencies do not need to take any action, Pakosta said. A large proportion of state institutions have already moved behind the government’s unified cyber shield, while the transition continues.

Pakosta described the quarantine as one small measure within Estonia’s wider cybersecurity work. Estonia’s courts have gone further, saying they will ask parties in legal proceedings to stop using .ru addresses for official communication, according to ERR.

How the Baltic states are hardening against Russia

Estonia's email quarantine forms part of a broader Baltic effort to limit Russian influence and strengthen defenses against military, cyber, and covert threats.

Estonia, Latvia, and Lithuania are constructing a Baltic Defense Line, a planned network of bunkers, anti-tank ditches, and other barriers, along their borders with Russia and Belarus. Latvia has also banned imports of Russian and Belarusian books, clothing, toys, and other goods.

The threat extends beyond cyberattacks: an Estonian court found that Russia’s military intelligence agency, the GRU, ordered the 2024 firebombing of a Ukrainian restaurant in Tallinn, part of a wider Russian sabotage campaign targeting European supporters of Ukraine.

Russian propagandists used the Matryoshka disinformation network to circulate a digitally altered front page of the Polish regional weekly Przegląd Regionalny warning of a “hungry fall and winter” in Ukraine, the country’s Center for Countering Disinformation reported.

The fake turns genuine anxiety over Russian attacks on warehouses and food logistics into an unsupported prediction of mass starvation. The Center said Matryoshka routinely disguises fabricated material as reporting by established Western outlets, lending Russian narratives borrowed credibility while creating the impression that foreign media consider Ukraine’s situation hopeless.

The fabricated Przegląd Regionalny front page claimed Russian strikes would push 63% of Ukrainians to the brink of famine over a “hungry autumn and winter.” No such article ran—the real front page of that issue looked entirely different, and the circulated image was built using graphics-editing software, the Center said.

The image spread through Matryoshka, a network that dresses invented content in the mastheads of recognized Western outlets. In this case, the campaign was meant to frighten Ukrainians and weaken public confidence, according to the Center.

Although it impersonated a Polish outlet, the Center described Ukrainians—not Polish readers—as the campaign’s target: the Polish masthead supplied an apparently independent foreign voice for a Russian narrative.

The fake works because the disruption it points to is real. Russian attacks on warehouses and food logistics had destroyed up to 90% of Ukraine’s modern food storage capacity, and suppliers were moving stocks and changing delivery routes and storage methods in response, Agriculture Minister Taras Vysotskyi said on 28 August 2026, according to Interfax-Ukraine.

Supermarket chain ATB has temporarily capped purchases of certain essential goods at 6 units of any single product per customer, citing both Russian strikes and resellers buying in bulk.

What the fake predicts, though, is not what officials expect. Presidential defense-technology adviser Serhii “Flash” Beskrestnov urged Ukrainians not to panic and said a systemic food shortage was not expected, ZN.UA reported.

How Russia spreads disinformation in Poland

Russia has repeatedly exploited Poland’s information space to turn political, economic, and security anxieties against Ukraine. Polish Deputy Prime Minister Krzysztof Gawkowski said Russian intelligence had offered Poles €3,000–€4,000 ($3,500–$4,600) to spread disinformation before the 2025 presidential election.

After Russian drones entered Poland that September, Prime Minister Donald Tusk said the Kremlin was using real fears and emotions to fuel anti-Ukrainian sentiment. False claims about Ukrainians living off Polish taxpayers have also fed hostility as bilateral relations frayed.