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.