Nsiproxy is a Windows networking-related component that helps expose network information to user-mode clients. In practice, it sits near the plumbing that lets tools query connection details, so admin utilities and security software can ask the operating system what network activity is present on the host.
That makes Nsiproxy interesting to both defenders and attackers. If malicious kernel code hooks or tampers with this path, it can distort what the system reports about active connections, including command-and-control traffic. The result is not necessarily total invisibility, but reduced trust in local telemetry: endpoint tools may see an incomplete or misleading view. For defenders, Nsiproxy is a reminder that network monitoring should not rely only on the infected machine’s own reports; driver integrity checks, memory analysis, and external network visibility are important when kernel-level tampering is suspected.