AI Summary

Russian hacker group Secret Blizzard has upgraded its long‑running Kazuar backdoor into a modular peer‑to‑peer botnet aimed at long‑term persistence, stealth, and data collection. The botnet’s modular design allows the attackers to add or remove components as needed. Secret Blizzard’s activities overlap with those of Turla, Uroburos, and Venomous Bear, and the group is linked to the Russian intelligence service (FSB). It targets government and diplomatic organizations, defense‑related entities, and critical systems across Europe, Asia, and Ukraine.

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