computer program to detect and remove rootkits, trojans, viruses, worms, spyware, adware and other malware(anything that may harm a computer), using extensive behavioural analysis and cloud computing. The program is developed by SurfRight.

Once the programme detects a file with suspicious behaviour, it sends the file to a cloud over the internet. The malicious files are detected in the scan cloud and are removed by HitmanPro. The newest version of HitmanPro, version 3, uses Dr Web, Emsisoft Anti-Malware, G Data AntiVirus,BitDefender and now IKARUS (replaced Prevx as the fifth engine) to detect malicious software (see also multiscanning). There is a very low system load because the virus definitions are not installed on the computer in question, rather in the scan cloud on the Internet.