Trapwire is registered as a trademark with the United States Patent and Trademark Office. In the submitted document, the system is described in detail. The assumption is that terrorists are vulnerable due to their need to conduct pre-attack surveillance, “such as photographing, measuring and signaling”. Such suspicious activities, as detected in imagery from pan-tilt-zoom cameras or human reports, are entered into a database, using a “10-characteristic description of individuals” or vehicle information. The data is correlated across the network, claiming a “network effect” of increased security due to this correlation. The result is a TrapWire Threat Meter (TIM) level which may be monitored by security personnel. The system distinguishes threat and vulnerability information, the latter of which is not shared through the network.