Access to the wiring used in the organization’s LANs also needs to be restricted in order to prevent wiretapping. That means that cables and wiring should not be exposed in areas accessible to casual visitors. Wall jacks not in current use should be physically disconnected from the network to prevent someone from just plugging in their laptop and attempting to access the network. Wiring closets containing telecommunications equipment need to be securely locked as well. If wiring closets are shared with other tenants of an office building, the organization should place its telecommunications equipment inside locked steel cages to prevent unauthorized physical access by anyone else with access to that wiring closet.