Rosstat Leak Claims Up to 450,000 Russians Killed in Ukraine War
A cyberattack on Russia’s statistics agency exposed data that hacker groups say records 393,881 to 450,100 Russian deaths since the full-scale invasion began. The Moscow Times could not verify the dataset in full.
By DoomRadar · Published on DoomRadar . Updated .
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Countries named in the cited reporting. Highlighting does not show the area affected. Map: Natural Earth.
How the effects could reach youConditional effects
Based on two sources with available article excerpts. Source-linked claims are not independent confirmation.
Event date: The leaked figures cover deaths recorded through at least August 27, 2026; the breaches occurred on October 29 and November 1, 2026. [2][1]
What happened
Cyber Partisans and Silent Crow said they breached Rosstat, Russia’s Federal State Statistics Service, in attacks on October 29 and November 1. They said roughly 23 terabytes of internal economic, demographic and wartime data were taken. [1][2]
References for this detail (2)
- Official Russian Data Shows 450,000 Killed in War, Death Rate Accelerating – Rosstat Leaksthemoscowtimes.com · Article published: Nov 7, 2026, 11:32 PM UTC
- Rosstat hack: data obtained suggests over 390,000 Russian deaths in Ukraine wareuronews.com · Article published: Nov 8, 2026, 5:04 PM UTC
Cyberpartisans BY calculated at least 393,881 Russian citizens killed by August 27, 2026. Silent Crow’s tally was higher at 450,100, while The Moscow Times described the broader figure as more than 450,000. [2][1]
References for this detail (2)
- Official Russian Data Shows 450,000 Killed in War, Death Rate Accelerating – Rosstat Leaksthemoscowtimes.com · Article published: Nov 7, 2026, 11:32 PM UTC
- Rosstat hack: data obtained suggests over 390,000 Russian deaths in Ukraine wareuronews.com · Article published: Nov 8, 2026, 5:04 PM UTC
The Moscow Times cross-referenced 50 names from the Mediazona and BBC Russian death-record project with the leaked dataset but said it could not verify the data in its entirety. Russia has not officially disclosed battlefield losses since September 2022. [1]
References for this detail (1)
- Official Russian Data Shows 450,000 Killed in War, Death Rate Accelerating – Rosstat Leaksthemoscowtimes.com · Article published: Nov 7, 2026, 11:32 PM UTC
The reported totals include more than battlefield deaths. The Moscow Times said 14,160 records concerned armed-forces members who died from non-military causes, while more than 32,000 people died from wounds sustained at least a year earlier. [1]
References for this detail (1)
- Official Russian Data Shows 450,000 Killed in War, Death Rate Accelerating – Rosstat Leaksthemoscowtimes.com · Article published: Nov 7, 2026, 11:32 PM UTC
Rosstat stopped publishing annual causes-of-death data from 2024, according to Euronews, making outside assessment of the war’s demographic effect more difficult. A separate Meduza-Mediazona study estimated roughly 350,000 fallen Russian servicemen by the end of 2025. [2]
References for this detail (1)
- Rosstat hack: data obtained suggests over 390,000 Russian deaths in Ukraine wareuronews.com · Article published: Nov 8, 2026, 5:04 PM UTC
Context from the sources
Russia has rejected independent casualty estimates as unreliable, while the leaked figures, if validated, would make the war the country’s deadliest conflict since World War II, according to The Moscow Times. [1]
Explore the sources and reporting timeline
2 source links · 2 domains
These counts describe the references, not independent confirmations. Different outlets can repeat the same original report.
Source timeline
Oldest to newest among the available source dates, not a chronology of the incident. Article publication dates come from the source; other recorded dates may reflect when a link was found.
- [1] Official Russian Data Shows 450,000 Killed in War, Death Rate Accelerating – Rosstat Leaksthemoscowtimes.comReferenced for: detail 1, detail 2, detail 3, detail 4
- [2] Rosstat hack: data obtained suggests over 390,000 Russian deaths in Ukraine wareuronews.comReferenced for: detail 1, detail 2, detail 5
Questions answered by the reporting
Who released the figures?
Belarusian Cyber Partisans and Silent Crow said they breached Rosstat and extracted demographic, economic and wartime data. [1][2]
Are all the recorded deaths combat fatalities?
No. The dataset reportedly includes non-military deaths, including illness, road accidents, suicide and deaths from earlier wounds. [1]
What this could mean for you
A confirmed death toll on this scale could expose deeper losses in Russia’s working-age and military-age population.
War deaths and the demographic data reportedly taken from Rosstat could reveal or contribute to a shrinking labor and recruitment pool.
Reported basis: [1][2] · The possible effect is interpretation.
Depends on: The leaked records must be authenticated and shown to cover the stated population consistently.
Possible time frame: months, if those conditions hold.
Russian statistical and demographic records could face further disruption or tighter public access.
The claimed Rosstat breach involved internal economic and demographic data and followed the agency’s reduced publication of causes-of-death statistics.
Reported basis: [1][2] · The possible effect is interpretation.
Depends on: Further breaches or an official security response restrict access to comparable records.
Possible consequences, not a forecast. Their relevance depends on your location and the conditions above.
For your country
Choose a country to check how this event could affect you.
What changes the outlook
Risk increases if…
Independent checks confirm the higher tally and show that additional war-related deaths were omitted from public Russian statistics.
Further Rosstat breaches expose more restricted casualty or demographic records.
Pressure eases if…
A transparent Russian release of underlying records allows independent researchers to reproduce or correct the calculations.
Independent verification narrows the gap between the two hacker tallies and clarifies how many deaths were combat-related.
Still unclear
The complete dataset’s authenticity and methodology have not been independently established.
The reported totals do not clearly separate military combat deaths from all other war-related or service-member deaths.
Market implications
Market impact
Sources (2)
References for the reported details. Separate links do not necessarily mean independent confirmation.
Available excerpt
A data leak from the Russian state statistics agency Rosstat shows that, according to official figures, over 450,000 Russians have been killed in the war…A short excerpt from our source record; open the original for the full article.
Available excerpt
Hacker groups Cyberpartisans BY and Silent Crow say they hacked Rosstat and counted Russian losses since the invasion of Ukraine. Their tally: between 393,000 and…A short excerpt from our source record; open the original for the full article.
First tracked by DoomRadar: . AI-assisted analysis · . Based on linked headlines and available excerpts. Methodology · Report an error.