A rootkit is a general description of a set of programs which work to subvert control of an operating system from its legitimate operators. Usually, a rootkit will obscure its installation and attempt to prevent its removal through a subversion of standard system security. Techniques used to accomplish this can include concealing running processes, files or system data from the operating system. Rootkits have their origin in benign applications, but in recent years have been used increasingly by malware to help intruders maintain access to systems while avoiding detection. Rootkits exist for a variety of operating systems, such as Microsoft Windows, Mac OS X , Linux and Solaris. Rootkits often modify parts of the operating system or install themselves as drivers or kernel modules

مكافح برامج التجسس المخربة روتكيت
http://www.dorarr.com/forum/showthread.php?t=23616
ومن الممكن حذف كلمة كلمة روتكيت ولكن أفضل إضافتها لإكمال الإيضاح
http://wiki.arabeyes.org/techdict:RootKit