TrojanDropper is a Trojan program designed to install and launch other programs on the victim machine without your knowledge and permission. Once executed, TrojanDropper will open up a huge security hole through which large amounts of adware and spyware can be piped to your system. TrojanDropper places any financial or banking information stored on your computer in severe jeopardy and represents a serious security risk; therefore, remove TrojanDropper as soon as it has been detected.