Discover Dialers Backdoor - Version 5.8.40 Discover Dialers Backdoor - The term rootkit is used to define a Trojan (or technology) used to hide the presence of a malicious object (process, file, registry key, network port) from the computer user or administrator. Removing rootkits without compromising system integrity is particularly challenging and needs to be done with care. Discover Dialers Backdoor finds and removes any rootkit that is hidden on your computer.