Cyber Risks · Krebs on Security

The Kimwolf Botnet is Stalking Your Local Network

Summary: Synthient is tracking more than 2 million Kimwolf-infected devices worldwide, concentrated in Vietnam, Brazil, India, Saudi Arabia, Russia and the United States, with two-thirds being Android TV boxes that ship with no security or authentication. The botnet spreads by tunneling back through residential proxy networks into local networks, a weakness researcher Benjamin Brundage found exploited by setting DNS records to RFC-1918 addresses like 192.168.0.1, and by early December 2025 he had identified a one-to-one overlap between new Kimwolf infections and proxy IP addresses rented by China-based IPIDEA.

Key Takeaway: Brundage watched Kimwolf rebuild from almost nothing to two million infected systems in a couple of days by tunneling through IPIDEA's proxy pool, which advertises access to more than 100 million residential proxy endpoints - so the firewall and router protecting your internal network may no longer be the boundary you assume it is.

Read the original at Krebs on Security ↗

Topics
Vulnerabilities & Patching
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