29
Apr
2017

How antivirus software works

 

Scanning your computer had become the action that most of us take for granted. This isn’t a good idea as viruses lurk from all sides and are just waiting for a gullible user to download an infected file or a program. Even newer computers are affected by the viruses and we all know what happens when you download that beautiful wallpaper which can be found on the banner ad. Your computer is infected by several viruses and some of them can track cookies i.e. get an inside knowledge of your whole internet history. Another can be more menacing and one of the worst is a Trojan horse that deserves its name fully as it’s attached to another program so you will be thinking that you are downloading something that you actually need. Instead of that you will be getting a powerful virus which cannot be dealt it with Windows Defender as your primary antivirus software. As you might have guessed there are two sorts of antivirus programs free and ones that you need to pay for. Most renowned virus software developers will offer you the free trial plan and if you like the service that they offer; you can switch to the paid plan. It is important that you know about something, before you start using it so we will tell you everything you need to know about anti viruses.

Some of your friends that are so called IT experts may tell you that you do not need an antivirus in this day and age but that is completely false. A computer that does not have a suitable antivirus protection will be more prone to the malicious software, files or to the theft of your credit card details. Let us begin with your journey so you will be able to understand how an antivirus works. The interface of the antivirus might look quite simple, even for the user who is the beginner in the computer usage, but that is not the case as these are complex programs that have many useful purposes. Antivirus has to be just one of the layers of your security as there are also malware and other threats to your computer.

Antivirus has been a mainstream security software for almost 20 years and still there are more things to be learned about this super useful software. If you want to know how an antivirus software works, then you have to be aware of the type of processes that make an antivirus useful tool to combat all of those internet threats. The first type of scanning is the on access scanning that is the first line of the defense for your machine. It is quite obvious that an antivirus software will always run in the background if it isn’t turned off by a user in the task manager. This means that it will scan any file that you have downloaded from the internet. It will perform even deeper scans of the files which were downloaded from unknown sources. Some files can be reported as false positives i.e. the software believes that the file may damage your computer but it isn’t sure. This type of situation requires you do some research and thus decide if you want to leave the file or quarantine it. If you decide to buy an extra option such as internet security, then all of your online purchases will be protected by a software. That is not all as antivirus will warn you when you are trying to access sites which were reported as being full of malicious content before.

We are certain that if you have ever owned a computer and any antivirus software that you had performed the full scan. Full scans are very slow and it takes hours to complete it, but every file on your computer is scanned. It is a very useful procedure when you install a new antivirus software or you install the first antivirus software on your brand new computer. People tend to use it too as it is able to discover a dormant virus and remove it from the computers. These are very dangerous as on access scanning will not be able to find this type of virus. As it takes for a long time for a full system scan to be completed; some antivirus programs had added extra features for faster scanning. Critical scan is used to scan currently running processes, memory so it can quickly determine if your temporary files are infected by a computer virus. The biggest advantage of this type of scanning is that it will be over in a couple of minutes. Custom scanning is another feature which allows you to scan any file, folder or a program on your computer separately. These are extremely useful when you want to scan an external hard drive or a pen drive as you don’t know if these are infected or not.

Computer viruses and its gaieties change pretty fast so an antivirus needs to keep up with them if the developers want to retain their user and customer base. These sorts of updates are referred as virus definitions. They add the viruses which were not known before, so all the viruses that were found by the programmers is added to the antivirus. Virus definition comes as an update as it is already explained that the software needs to add all the malware which were found since the last update. There is no need to be afraid of the malware as antivirus has a process called heuristics. Heuristics means that a security software is able to find a modified existing malware without an installation of virus databases. It is easier than to seek and find the slightly modified malware. Be sure that you check out manually for the latest virus update.

All of the things that antivirus has to deal with and how it successfully does that is explained in the article. The only thing that you need to do is to choose whether you need an antivirus that is a freeware or the paid version with more features.