What is the antivirus of antivirus
What is antivirus
The term antivirus describes the immune defense of IT systems. Antivirus is the linguistic alternative to the computer virus that emerged with the introduction of computer systems in the 1980s. Antivirus is thus the shortened form of antivirus software and comprises programs that find malware and remove it independently. In the meantime, antivirus programs prevent various attacks and infections with malware such as worms, Trojans, keyloggers, ransomware, etc. in advance.
An antivirus is a must for every IT system. It increases IT security. The installation and management of such programs by IT service providers is known as antivirus management.
How does antivirus work?
The question of how an antivirus works cannot be answered across the board due to different virus scanning techniques. What all programs have in common, however, is that they check devices and IT systems for malware, alert if they are infected with a computer virus, prevent or restrict access of the malware to the system and the Remove computer virus (can).
Types of antivirus
- Real-time antivirus
- The real-time antivirus is constantly active and usually runs unnoticed in the background. This installed Anti-virus software scans all files, programs and memory via a system interface. If the real-time scanner finds something suspicious, the user is informed and asked what to do next: Block access? Delete file? Or move the file to quarantine? The same can also be controlled manually by the user to check the whole system.
- Online antivirus
- Online antivirus refers to antivirus programs that load the virus pattern to be checked via the network connection. This means you have current threats on your radar. Often this antivirus is also called Online virus scanner designated. Manually deployable, it is often used as an additional safeguard to the installed virus scanner if the user suspects that his system is infected.
- Other virus scanners
- Virus scanners are as diverse as the threats. Especially in the corporate environment Antivirus software for network analysis in use. The antivirus scans the data stream and, in the event of an abnormality, carries out a pre-defined response, such as blocking the data traffic.
Antivirus - pros and cons
An antivirus is a must for every IT system. It increases IT security. However, the different types of virus scans also have some disadvantages: With real-time antivirus, the system often becomes slower. Other software applications are delayed. There is also a risk that the Anti-virus software Reports malware that is actually none. Depending on the antivirus, these may be incorrectly labeled as Computer virus identified files or applications are deleted. In addition, it can be counterproductive to have two antivirus scanners in use at the same time. They can block each other - and thereby endanger the desired IT security rather than secure it.
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