Backdoor.KeyStart.bz is a malicious backdoor Trojan that runs in the background and allows remote access to the compromised system. As a malware application, Backdoor.KeyStart.bz tends to disguise itself as a helpful tool. This is not a new way to deceive computer users and gain a purchase; however Backdoor.KeyStart.bz makes uses of additional misleading tactics as well. Backdoor.KeyStart.bz is not able to infect computers on its own; instead, it coerces people into downloading the program voluntarily. Backdoor.KeyStart.bz tends to be delivered onto a system via other Trojan application. This Trojan mimics Windows firewall notifications and asks if the user would like to enable protection. Once Backdoor.KeyStart.bz infiltrates a computer, it begins offering the user the paid version of the software. Backdoor.KeyStart.bz might appear to be legitimate anti-spyware, but it is in fact absolutely non-functional. Backdoor.KeyStart.bz tends to imitate system scans and will report large numbers of infections found on the system. One should bear in mind that every message generated by Backdoor.KeyStart.bz can be ignored as they are all completely falsified. Not only is Backdoor.KeyStart.bz completely useless as antispyware, but it is also rather malicious. Backdoor.KeyStart.bz will slow down a system’s performance and tends to limit internet connection. Backdoor.KeyStart.bz displays many pop-up messages that make using a computer an impossible task. Backdoor.KeyStart.bz is also capable of hijacking web browsers and redirecting it to its personal website.