Following the November 2026 hack of Russia's federal statistics agency, Rosstat, Russian military losses once again became the subject of international investigations. Journalists obtained what appeared to be a trove of internal death records, even as the official statistics needed to independently verify the death toll had become increasingly inaccessible over the years. The story began long before this cyberattack: the Russian state had progressively restricted the publication of information about fallen service members, causes of death, and demographic changes. What exactly was withheld, how did the restrictions develop, and why has the human cost of the war largely disappeared from official public reporting?

Secrecy predates the full-scale invasion

On May 28, 2015, Vladimir Putin signed a decree extending state-secret protections to information about military personnel losses during special operations in peacetime. Previously, the relevant classification provision had covered losses in wartime. Reuters reported that the decision came amid allegations that Russian troops were fighting in eastern Ukraine, allegations Moscow denied at the time. Presidential spokesman Dmitry Peskov rejected suggestions that the decree was connected to Ukraine.

There is an important distinction between what the decree did and what can be established about the reasons behind it. It expanded the range of classified information, but the decree alone does not prove that particular figures were concealed for a specific political purpose. Human rights advocates and freedom-of-information specialists nevertheless criticized the approach: deaths in government service are a matter of public interest, and restricting access to such information affects citizens' ability to scrutinize the authorities.

From official announcements to near silence

After Russia launched its full-scale invasion of Ukraine in February 2022, the Russian Defense Ministry announced casualty figures on several occasions. In September that year, Sergei Shoigu said that 5,937 Russian service members had been killed. In subsequent years, the ministry did not publish regular, comparable nationwide death totals. That does not mean the state stopped recording losses internally. The absence of public reporting is not the same as the absence of administrative records.

Information about individual deaths continued to emerge through obituaries, statements by regional governors and municipal officials, and posts by relatives. These reports, however, do not amount to a complete national register. Regional authorities varied in their willingness to disclose deaths, and researchers documented instances in which such announcements stopped. The public record consequently became fragmented: some names were available, but the overall scale of the losses was not.

Rosstat restricts access to demographic statistics

The next major development was the restriction of demographic data. Several detailed mortality tables ceased to be updated after 2022. Researchers, including contributors to the Russian Analytical Digest, pointed to the loss of breakdowns by sex, age, region, and cause of death. Such figures are essential for tracking changes in mortality among men of military and working age and for comparing those trends with independent sources.

The restrictions widened in the spring and summer of 2025. Rosstat gradually stopped publishing key monthly regional indicators covering births, deaths, marriages, and divorces. By late June, it had not released the final detailed mortality data for 2024. Meduza reported, citing researchers and demographer Dmitry Kobak's correspondence with Rosstat, that the agency's replies referred to changes in the legal framework governing statistical disclosure. Not every missing table was accompanied by the same official explanation.

In July 2025, it also emerged that Russia's Interior Ministry had stopped including figures on people killed as a result of crimes in its monthly statistical reports. This is a separate measure and should not be confused with military deaths. Taken together, however, the changes reduced the number of independent ways to check government mortality figures.

Why demographic tables matter when counting the dead

There are two fundamentally different ways to investigate the number of people killed at the front. The first is to identify individuals by name. Journalists and volunteers examine obituaries, photographs of graves, relatives' posts, and official announcements. This is the approach taken by Mediazona and BBC News Russian. Verified names document specific deaths, but they cannot provide a complete total: many cases never enter the public record.

The second approach is statistical. Researchers examine excess mortality among men, probate records, and other administrative traces left by a death. Meduza and Mediazona use inheritance-case records to estimate losses and compare their findings with available demographic statistics. Before Rosstat stopped publishing detailed figures, these independent datasets made it possible to cross-check estimates. Once the tables disappeared, that verification became substantially harder.

In May 2026, Meduza reported a revised death toll estimate that took account of court decisions declaring missing service members dead and delays in the registration of inheritance cases. Its joint research with Mediazona put Russian military deaths by the end of 2025 at approximately 352,000. This is a statistical estimate, not an official figure or a complete list of identified individuals.

What the Rosstat hack changed

In early November 2026, the Silent Crow group and Belarusian Cyber Partisans claimed to have penetrated Rosstat's systems. The agency acknowledged cyberattacks but denied that its databases had been leaked. Our first FACTUM.press report examined what was confirmed about the intrusion and which claims remained unverified statements by those who said they carried it out.

International newsrooms subsequently obtained what appeared to be an export containing more than 11 million death records. Different methods of analyzing the dataset produced estimates of approximately 393,000 to 450,000 deaths associated with the war or broader categories of losses. These figures do not constitute a single verified count of Russian soldiers killed in combat. Depending on the methodology, the sample may include civilians, noncombat deaths, and records with incomplete information. Our second report explains in detail why the estimates differ, how journalists assessed the data, and why delays in death registration matter.

The paradox is that the state continues to collect detailed information about deaths for administrative purposes while withholding enough of that information to prevent meaningful independent scrutiny. The alleged leak offered a partial glimpse into records unavailable through routine public reporting. Yet the authenticity of every document and the completeness of the dataset remain subject to independent verification.

What can be said about the reasons for withholding data

Russian authorities have not offered a single public explanation linking every restriction on statistical disclosure to an effort to conceal military losses. It would therefore be inaccurate to claim that each decision was taken exclusively for that purpose. Researchers and analysts nevertheless identify consequences that can be established regardless of the stated motives: the restrictions make it harder to estimate casualties, check official claims, and study the war's demographic impact.

In July 2025, the Institute for the Study of War (ISW) assessed Rosstat's decision to stop publishing mortality statistics as likely part of Kremlin efforts to conceal losses and wider demographic problems. That is the organization's analytical assessment, not documented acknowledgment of intent by Russian officials. Meduza and independent demographers, meanwhile, have shown which specific calculations became impossible once the tables were withdrawn.

Publishing detailed death statistics would allow official claims to be compared independently with the actual consequences of the war. For service members' families and the wider public, the issue concerns knowledge of people's fates, government spending, and the scale of the conflict. For researchers, it concerns the ability to verify figures without relying on a single source. The restrictions affect all three.

The right to know and the limits of state secrecy

The freedom to seek, receive, and impart information is protected by Article 29 of Russia's Constitution and Article 19 of the International Covenant on Civil and Political Rights. These guarantees do not mean that every piece of military information must be public: international human rights law permits certain restrictions, including for national security. Such restrictions, however, must have a legal basis and meet tests of necessity and proportionality.

Aggregate mortality figures and demographic trends are not equivalent to operational information about troop positions or military plans. The decision to stop publishing civilian statistics therefore cannot automatically be justified by invoking military secrecy. Any assessment of these restrictions must distinguish information whose disclosure poses a specific security risk from data the public needs to debate government policy.

What remains hidden

As of November 2026, Russia still does not publish regular, comprehensive official figures on service members killed in the war. Detailed demographic series that once enabled independent assessments of the war's consequences have become unavailable. Journalists' lists of named casualties and statistical models partly fill the gap, but both have limitations. The alleged Rosstat leak added another potential source without producing a definitive, uncontested register of the dead.

The central finding is not that one cyberattack established the war's final human cost. Rather, it exposed the gap between the information the state is capable of collecting and the information it makes available to its citizens. With official data withheld, Russian society is left to reconstruct the scale of the losses from obituaries, probate records, court rulings, and documents whose provenance still requires thorough verification.