Antivirus software, or commonly referred to as antivirus software, is/is designed to prevent, detect and act against malicious programs/malware (computer viruses, keyloggers, backdoors, trojans, adware, spyware) software to disarm or eliminate. ,and many more).

For effective protection, AntiVirus must always work behind the scenes and stay up-to-date in order to be able to detect the latest versions of malware.

Malicious programs, such as computer viruses, are freely designed interfering programs. Cause interference, such as: recording, changing, deleting data. The program replicates itself by spreading to other computers and over the Internet.

Antivirus programs are the most fundamental part of a multi-layered security strategy, even for the most advanced computer users. Continued attacks on browsers, plug-ins and even operating systems make antivirus protection very important.

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How antivirus software works and works on our computer

Access Scan

Antivirus software runs in the background of your computer and scans every open file. This is called on-access scanning, background scanning, administrative scanning, real-time protection, etc., depending on the antivirus program you use. When an .EXE file opens, it may appear as though the program will start immediately, but this is not the case. Antivirus software first scans the program and compares it to affected viruses, worms, and other types of malware.

Antivirus software also performs “heuristic” checks, checking programs for the types of bad behavior that might indicate a new virus. Antivirus programs also look for other types of files that may contain viruses. For example a ZIP file. Archives may contain compressed viruses or Word documents that contain malicious macros. Files are scanned each time they are used – for example, if you download an EXE file, it will be scanned immediately before you open it.

It is possible to use an antivirus program without access scanning, but this is not a good idea – viruses that exploit vulnerabilities in the program will not be caught by the scanner. Once the virus has infected the system, it is very difficult to remove. (It’s also hard to tell if the malware was actually removed.)

Full System Scan

Due to on-access scanning, it is usually not necessary to run a full system scan. If you download a virus to your computer, your antivirus software will spot it immediately—you don’t need to run a manual scan first.

A full system scan is especially useful if you just installed an antivirus application. This helps ensure that there are no viruses on the computer. Most antivirus programs schedule a full system scan, usually once a week. This ensures that your system is scanned for active viruses with the latest virus definition files.

A full system scan is also helpful when repairing your computer. If you want to repair an infected computer, plug the hard drive into another computer and run a full system scan.

Virus Definition

Antivirus software relies on virus definitions (updates) to detect malware. Therefore, it automatically downloads the latest updates, once a day or more frequently. Definition files contain lists of viruses and other malware found on the Internet. If the antivirus software scans the file and finds that the file matches an available definition, the file is part of malware and the file is quarantined, or the antivirus software can automatically delete the file or keep it if the user believes it is A false alarm at its location. .

Antivirus companies should constantly update the latest definitions of malware to ensure malware is caught by their programs. Antivirus labs use a variety of tools to eliminate viruses and release updates in a timely manner to keep users safe from new malware.