What is a Rootkit?

A rootkit gives attackers full access to the system (hence the term ‘root’) and typically hides the files, folders, registry edits, and other components it uses. In addition to hiding itself, a rootkit typically hides other malicious files that it may be bundled with. The ubiquitous Storm worm is one example of rootkit-enabled malware. (Note that not all Storm Trojans are rootkit-enabled).

Several free rootkit scanners are available to help ferret out the presence of these hidden menaces. For best results, scan the system with at least three rootkit scanners on a regular basis in addition to your normal antivirus scanning. But remember – there’s simply no substitute for prevention. Make sure you’re taking the right security steps to defend your PC. And never underestimate the power of simplicity: the free Spybot TeaTimer monitors the critical system areas that malware exploit in order to gain a foothold. Used properly, a permission-based firewall, such as older versions (v5.5 or below) of the free ZoneAlarm, can also help alert you to the signs of a hidden infection.