Rogue DHCP server spreads the wrong network parameters that create the bridge for attackers to expose confidentiality and privacy. Trojans like DNS-changing installs the rogue DHCP server and pollutes the network. It provides the chances for attackers to use compromised resources on network. Rogue DHCP server creates several problems to expose the privacy of legitimate users. Two important attacks are shown in figure 1. The poster focuses on two of most important issues.