Hackers breach Rosstat and report over 400,000 Russian war fatalities

According to reports by Українська Правда, hacker groups Silent Crow and Cyberpartisans BY have breached Russia's state statistics service, Rosstat, publishing internal data regarding Russian military fatalities in the war against Ukraine. Their analysis indicates that by the end of August 2026, Rosstat's database contained records of over 410,000 deaths directly linked to combat actions and their immediate aftermath.

Internal Database Breakdown and Methodology

Silent Crow's calculations show that records include specific International Classification of Diseases codes and entries detailing deaths during military operations. While the core combat-related figure exceeds 410,000, the group's broader assessment reaches 450,100 total deaths. This expanded dataset incorporates additional categories of casualties:

• Nearly 15,000 non-combat military deaths resulting from illnesses, traffic accidents, and suicides.
• 575 deaths explicitly marked with the designation "terrorist attack".
• Separate estimates from the Cyberpartisans BY hacker collective, using an independent methodology, calculated 393,881 fatalities, as reported by Meduza.

Context of Ukrainian Leadership Estimates

These leaked datasets align with previous statements from Ukraine's political leadership. In July, President Volodymyr Zelenskyy reported that Russia has suffered approximately 1,600,000 total casualties, including about 700,000 killed in action. Cyber operations targeting closed Russian federal registries continue to provide rare external visibility into the severe human cost absorbed by the Russian military apparatus.