A method and system for scanning a computing system network for dark matter computing systems and computing devices. The method includes establishing a communication link between a master server and at least one target scanning agent that has at least one network computing system coupled thereto, creating a scanning job for the target scanning agent, building a scanning job command based on the scanning job, sending the scanning job command to the target scanning agent, receiving scanning job results from the target agent, parsing through the received scanning job results for identifying information of hosts in the network computing system detected during the scanning job, determining which detected hosts are known hosts and which detected hosts are unknown hosts based on the identifying information, and comparing the identifying information of the unknown hosts to reference identifying information to determine which of the unknown hosts are dark matter.