a deception management system to detect attackers within a dynamically changing network of computer resources , including a deployment governor dynamically designating deception policies , each deception policy including names of non - existing web servers , and levels of diversity for planting the names of non - existing web servers in browser histories of web browsers within resources of the network , the levels of diversity specifying how densely the name of each non - existing web server is planted within resources of the network , a deception deployer dynamically planting the names of non - existing web servers in the browser histories of the web browsers in resources in the network , in accordance with the levels of diversity of the current deception policy , and a notification processor transmitting an alert to an administrator of the network in response to an attempt to access one of the non - existing web servers .