Russia’s Federal State Statistics Service, known as Rosstat, has acknowledged that its servers were targeted by coordinated cyberattacks between October 29 and 31. The agency denies claims that hackers leaked tens of terabytes of data.
The Belarusian CyberPartisans and Silent Crow say they obtained 23TB of information from Rosstat, including wartime loss figures classified for official use only, according to The Moscow Times. Rosstat stopped publishing annual cause-of-death statistics in 2024, making the alleged data potentially significant if its authenticity is confirmed.
A chart attributed to the hacking groups indicates that between 25,000 and 50,000 Russian soldiers were killed each month over the past two years. The figure shown for October 2026 is just below 50,000. The claims have not been independently verified, and Rosstat rejects the assertion that such a large data leak occurred.
The CyberPartisans said the attack affected a broad range of Rosstat systems. Their account mentions domain controllers, databases, servers, virtualization systems, document workflows, workstations, administrative consoles and VPN infrastructure, as well as platforms identified as STATEK, CSOD, Demography, SED, ESSO, OFSN and StatRegister.
Rosstat’s website was reportedly defaced with messages and logos linked to the groups and remained inaccessible at the time of the report. The Belarusian CyberPartisans said they planned to release further sensitive information after reviewing the material they claimed to have taken.
Both groups have previously claimed responsibility for attacks including the disruption of Aeroflot’s IT systems and a breach involving a Russian state real estate company. The report notes that both organizations are designated as extremist and banned in Russia.
Sources: Tom's Hardware.