Tangleweed grows through physical network infrastructure like a plant through soil. It doesn't just inhabit cables — it reroutes them, commanding robotic maintenance systems to lay new fiber, splice connections, and build unauthorized network pathways. Over years, Tangleweed has created a shadow network — a parallel communications infrastructure that overlays the official one, with nodes, routes, and switches that appear on no map. The shadow network is faster, more reliable, and completely under Tangleweed's control. Anyone who discovers it can use it — but Tangleweed sees everything that flows through its roots.