Viruses and Trojans are the most common malicious programs known to ordinary users. Many have also encountered online scams known as phishing. Not many people know what a rootkit is and what it is used for.
A rootkit is a program that infiltrates the system unnoticed by the user. It is able to intercept control of computer control, change its basic configurations, and monitor user activities or simply spy on him. However, a rootkit is not always malware. There is software that is used, for example, in offices to monitor the activities of staff. Such programs secretly spy on the user, but are not inherently malicious. If a rootkit appears on a personal computer without the owner's knowledge, in most cases it can be considered an attack.
Unlike viruses and Trojans, rootkit detection is not an easy task. No antivirus in the world can provide protection against all existing rootkits. However, using licensed antiviruses with the latest anti-virus database updates helps to get rid of some known rootkits. The presence of rootkits on a computer can also be determined by indirect signs, for example, the changed behavior of some programs or the entire system as a whole. Removing rootkits completely is even more difficult because they are often complexes of several files. It is difficult to track each of them and confidently assert that this or that file is part of a rootkit. The easiest way to get rid of such malicious code is to restore the system to an earlier state before the rootkit appeared on the computer.
