Modern buildings accumulate unofficial connectivity faster than many owners realize: tenant Wi‑Fi islands, contractor access points, IoT hubs, and temporary carrier gear that operate outside documented designs. This episode gives property and technology leaders a compact playbook for identifying those ‘shadow networks,’ understanding the operational and security tradeoffs they introduce, and taking pragmatic, low-friction actions that improve reliability without alienating tenants. Alex interviews Michael Harrington to unpack common discovery methods, simple policy and communication patterns, risk-based prioritization for remediation, and minimal‑disruption tactics that preserve tenant services during cleanup. Listeners will leave with concrete examples and a short checklist they can use on the next site walk to reduce surprise outages, speed recovery, and tighten the handoff between facilities, IT, and vendors.