Antiviruses Work, Computer and communication technologies are developing faster and faster. Unfortunately, the development of viruses does not stand still. Today, it is rare when someone does not protect their computer from a virus through special programs. Antivirus programs have long become something everyday for each of us. However, not everyone knows how these programs work. Let’s talk about how such programs work.
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How does an Antivirus Work?
Antiviruses Work programs from different manufacturers include a different number of components. Moreover, one and the same company can release several versions of an antivirus, including a certain set of modules targeted at different market segments. So, for example, you have probably heard about the parental control component. This is a special feature that helps parents restrict underage computer users’ access to certain categories of websites or regulate their time in the system. Some antiviruses do not have this option and some do. For the most part, modern anti-virus applications have the following set of functional modules:
- anti-virus scanner is a component that looks for malware on the disks and in the device’s memory at the user’s request or according to a schedule;
- resident monitor is a part that monitors the state of the system in real time and blocks attempts to download or run malicious programs on the protected computer;
- firewall is a part that monitors the current connection, including analysis of incoming and outgoing traffic, as well as checking the source and destination addresses in each packet of information transmitted from the computer and arriving at the computer;
- web antivirus is what we imagine when we think about the operation of an antivirus. This part prevents the user from accessing dangerous resources that distribute malware, phishing and fraudulent sites using a special database of addresses or a rating system;
- e-mail antivirus is an application that checks for the safety of attachments to e-mail messages and (or) links sent by e-mail;
- anti-rootkit module is a module designed to fight rootkits (malicious programs that have the ability to hide their presence in an infected system);
- preventive protection module is a component that prevents dangerous actions of programs;
- update module is a component that ensures timely updating of other anti-virus modules and virus databases;
- quarantine is a centralized secure storage where suspicious (in some cases definitely infected) files and applications are placed before a final verdict is issued on them.
How do Antiviruses Replenish Databases?
Antivirus companies have several channels for new viruses to arrive. First of all, these are online services, that is, servers. Thanks to these options, any user can check the detection of an arbitrary file by ten of the most popular anti-virus engines at once. Each downloaded sample, regardless of the results of the check, is automatically sent to vendors for a more detailed study.
Another channel is called “spontaneity”, suspicious files that people transfer to viruslab through the website of an antivirus company, at the request of a support service, or unload from quarantine.
The third channel is honeypots. This is a kind of bait for virusmakers in the form of virtual servers with ports open to the outside and logins and passwords. This is where many creators of viruses merge their works and are surprised at the incompetence of the creators.
The fourth way is the exchange of bases between the vendors themselves. However, it is important to note that in recent years, due to increased competition in the market and a narrowing food supply, cooperation between anti-virus companies has practically disappeared.