Security.Hijack is a threat detected by MalwareBytes Anti-Malware. The Security.Hijack threat is classified as PUP a Potentially Unwanted Program by MalwareBytes Anti-Malware because it inflicts and acts as a malicious threat into your computer system. Security.Hijack is not a virus but it does act like one. Security.Hijack is adware which is bundled using custom installers and dropped on your computer during the installation process. Most users have no idea how this Security.Hijack threat is installed on there computer and what it is, until MalwareBytes Anti-Malware detects it as a malicious threat or virus. Follow our instruction to remove this Security.Hijack threat from your computer.