The information is said to come from records held by Russia’s statistics agency Rosstat, which the hacker groups Cyber Partisans and Silent Crow are said to have hacked.
The data includes military deaths, but not the wounded, the missing or foreign soldiers recruited by Russia. Just over 356,000 of the deaths were attributed to “combat operations”, while around 90,000 were attributed to other war-related causes or had no cause of death listed, according to a compilation by the pro-Ukrainian group Silent Crow.
The American think tank Institute for the Study of War (ISW), which has been unable to verify the figures, assesses that the statistics are in line with recent reviews by the independent Russian news sites Mediazona and Meduza.
At the same time, ISW points out that the figures are likely to be an underestimate.
Russian losses in Ukraine have risen recently, according to the Ukrainian military. Its General Staff said earlier in November that more than 54,000 Russian soldiers had been killed or wounded in October.
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