A WiFi network manager stores a unique identifier value such as a network address associated with a communication device as being a valid credential for the communication device to subsequently access a WiFi network including one or more access points. The WiFi network manager monitors use of the unique identifier value to access the WiFi network. In response to detecting misuse of the unique identifier value by two or more communication devices using the unique identifier value to use the WiFi network, the WiFi network manager at least temporarily prevents access to the WiFi network.