FBI Dismantles 911 S5 Residential Proxy Botnet and Arrests Alleged Operator

U.S. authorities disrupted the 911 S5 residential proxy service, a botnet-backed platform that allegedly compromised millions of Windows devices and sold their IP addresses as proxies to cybercriminals. The FBI and international partners seized infrastructure tied to the service, while prosecutors charged and arrested the alleged administrator, identified as Chinese national YunHe Wang. According to investigators, the service enabled fraud, bomb threats, child exploitation, harassment, and large-scale financial crime by letting users route malicious traffic through unsuspecting victims’ home internet connections.

The FBI’s IC3 warned that infected devices were commonly enrolled through VPN or pirated software bundles and urged users to scan for malware, remove suspicious applications, and reinstall operating systems if needed. The operation follows a broader U.S. strategy of court-authorized botnet disruption previously used against state-linked infrastructure, including the 2018 takedown of the APT28 router botnet, underscoring continued law-enforcement use of technical and legal measures to seize command infrastructure and cut off criminal proxy networks.