Antivirus is a program that searches for viruses , trojans , worms , backdoors and other unwanted software on a user’s computer. As a rule, antiviruses are developed for the Windows OS family, which, as it were, hints at the following features of this OS:
- High prevalence,
- Greater vulnerability to attacks,
- Greater prospects of the antivirus market due to high commercialization (and Windows, in most releases)
- Alas, low computer literacy of its users.
Antiviruses are paid and free. We will not talk in detail about the pros and cons of both categories here, I only note that everything is not as clear as it might seem at first glance. The myth that antivirus companies create viruses themselves was entrenches firmly in the mass consciousness, a good article here will dot the “i” in this issue.
Different antiviruses fight malware in different ways. All antiviruses can detect viruses, but, unfortunately, not all can be effectively treated. Meanwhile, the antivirus may include several modules, depending on the release and what the office of the antivirus developer is capable of.
The modules can be the following: a module for searching software that are not in use, a module for analyzing suspicious behavior of programs (heuristic module), a quarantine module for isolating suspicious files, an update module for keeping new threats up to date, a module for “healing” infected files, a firewall, and it’s a firewall, and some others.
The main methods of Antivirus Software to fight these viruses
Antivirus is not a panacea! This is one of many “fighters” thrown into battle with security threats in an endless war for information, and not the strongest one. No anti-virus provides 100% protection due to the features of its functioning.
Unfortunately, most of the work of the antivirus focuses at eliminating the consequences of the “unhygienic” risky, and sometimes, alas, simply illiterate user work on the Internet, with external storage media and unknown applications.
Signature Detection Method
Surely you have come across messages from anti-virus,but why are they so important? What bases are we talking about?
The antivirus lab – the antivirus developer – detects the virus, analyzes it, and detects the so-called signature. However, the virus signature (attack signature) is a special digital sign of a malicious program by which you “recognize” it and determine it uniquely . Meanwhile, you enter the signature in the database, the user manually or according to a schedule regularly download the updates. A message from the antivirus about the obsolescence of the virus database signals a weakening of protection and an increase in the likelihood of catching some kind of “fresh”.
Heuristic Detection Methods of Antivirus Software
Many antivirus software contain a module for the so-called heuristic malware scan. The essence of the method is to analyze the behavior of all running programs. If in the process of the system’s operation “suspicious” detection of behavior of the application, that is, the program suddenly starts to do what it didn’t do before, then an alarm will be triggered and the heuristic module will inform the user about the potential threat.
Firewall : Protection against network threats
The firewall protects against network threats – from the local network and the Internet.
This module is by no means always included in the standard set of antiviruses ; often a firewall is developed, delivered, and sold as a separate program. Furthermore, many programs for connecting to remote computers or servers may use unsafe methods, leaving holes and vulnerabilities for penetration from outside.
The essence of the firewall is to control both incoming and outgoing traffic by limiting the ability to establish connections with certain remote resources. The most obvious method of protection is white and black lists of network resources. The “black” list of network resources is a list of sites. For example, where you can’t go, and the “white” list is a list of resources where you can go. As you can see, the white list method is much safer. But it also greatly limits the capabilities of the user and programs.
Advantages of a licensed Antivirus Software
Its main advantage lies in maintaining the relevance of versions. In the case of antivirus programs – in the constant updating of virus databases.
Is it really necessary to buy a licensed antivirus program? Licensed antivirus software that has official license constantly has the most current version. For antivirus getting regular updates means an increase in the degree of protection. However, specialists constantly monitor the emergence of new viruses and threats on the network. They even take the necessary measures to ensure the security of your personal device.
Users who choose licensed software can upgrade software versions for free. Pirated programs are updated later or not updated at all. This question causes a lot of controversy – an experienced user who monitors the relevance of the antivirus will be able to update the program on time, otherwise the virus will not escape.
In addition, users face the following questions: users of licensed programs can contact support. It even solves any problem associated with the operation of the program.
Software with a license guarantees the quality of what you purchased. Currently, in most offices only licensed programs are installed as evidence of the strength of intellectual property. The presence of certificates of conformity is a guarantee of successful cooperation between Russian and foreign companies.
Is a license acquisition the right investment? Without a doubt. A failed enterprise network will incur losses that are not comparable to the costs of a licensed program. The use of high-quality software not only enhances the image in the eyes of your customers and employees, but also increases the confidence of the state.
When planning a purchase of software for your home or office, you not only purchase a high-quality and reliable product, but make the right investment. It guarantees the safety of computer equipment and the protection of information.