What is adware, malware and hijackers. Classification

Pop-up windows, irritating ads, permanent redirect to the second-rate sites, and the high level of spam – these things can drive any user crazy. It becomes hard to work with a computer; web surfing becomes less convenient and consumes much more time.

These factors are unpleasant in themselves, but in addition they mean, that your PC is infected by malware. Our site is dedicated to removal methods that will help you to get rid of unwanted programs. Here you will find hundreds of articles with detailed step-by-step instructions about malware removing and about the security of your PC. Articles on the site are divided into three main directions, and they describe three types of unwanted programs: adware, malware and hijackers.


Infographics what is adware, malware, hijacker

What is adware?

The word “adware” means advertising-supported software. The main purpose of such programs lies in their title. This purpose is to flood the user's computer by advertisement. The process of the work of these programs won’t damage the computer.  Adware just collects data on the user's search query. However, when the area of interest is determined, adware is beginning to bear the inconvenience, showing you a wide variety of links, ads and pages that supposedly meet your interests. Naturally, reliable companies would not use such methods of advertising and all the sites that adware will show you, are potentially dangerous.

Do not confuse adware and spyware. Spyware programs are focused on gathering specific user's personal information, specifically all kinds of access and passwords. Data are collected without the user's consent, so without taking immediate actions to remove spyware – user may suddenly lose his accounts.

There are two ways for adware to infect user's PC:

  • In one package with free programs. While installing a program, users often forget to uncheck the consent to install adware. In this way novice developers are trying to compensate the production costs of their software and to be able to distribute it for free. This method is completely legal, because user is warned about the installation of adware, and he confirms the installation.
  • With help of malicious sites. If you visit a website that distributes malware, you already are at risk. If on such a site you purchase some goods or services, or download the file – you can be sure that your computer is infected. These sites use vulnerabilities of browsers and anti-viral programs as well as special hacking software, for discreet installation of adware. Often, users are directed to such sites by adware that already work on their computers. It is a vicious circle, moving in which, you will increasingly clog the system up to a complete inability to use a PC, or a critical failure.

The most famous adware at this moment is DNS Unlocker.

What is hijacker?

Hijackers (or redirects) have similar objectives with adware and their actions are causing great damage and inconvenience. Since hijacker infects the system, it infiltrates into a user's browser, creates backups in case of removal, and changes browser settings. Home page and default search engine may change, often without the possibility to change them back. On the computer that is infected by such program, you will receive advertisements and malicious links on any of your request. Even the most vigilant user eventually will make a mistake, click on the link and will get himself a whole bunch of new viruses. Redirects infect the system in the same manner which adware does.

Examples of hijackers The Smart Search or Trc.taboola.

What is malware?

Malware - is a computer virus in the classic sense of this word. The virus enters the system, and, depending on its orientation, begins to damage the files. Depending on the goals of each specific virus, files can be deleted, changed or encrypted, for subsequent sale of the cipher key. Today the information which is stored on the computer can cost much more than the computer itself, and loss of important files becomes a serious problem. If you do not stop this virus at the stage of installation, the damage may be irreversible. In this regard, we can say that implementation of basic rules of computer security is no less important for the defense of your system than good antivirus.

Widespread malware Cerber, Zepto.

Signs of computer infection:

  • Spontaneous shutdown of the computer;
  • Frequent restarting of the computer, while certain programs are running;
  • Repeating critical errors of proven programs, with which you never had problems;
  • Change the list of startup programs;
  • Inability to change settings in the administrator mode;
  • The appearance of unknown processes in the Task Manager (some of the processes names are just rambling jumble of letters and numbers, which is one of the signs of malicious programs);
  • Automatic opening of unknown windows when the computer starts;
  • Appearance of programs that you have not installed on your PC;
  • Blocked access to websites of well-known manufacturers of antivirus software, or sites, that provide repair and cleaning of the system;
  • Spam, pop-up windows with unknown links, and system messages with requests to disable antivirus to install some program or update it;
  • Noticeable slowdown of the system, and increased time of its response.

It should be noted, that some of these symptoms may be caused by usual clogging of the system by ordinary programs and files. Also, viral infection can occur without obvious symptoms, and you’ll learn about it only when malware will reach its goal. That’s why you need a qualitative anti-virus, which will pre-warn you about the dangers, and eliminate threats before damage will be done.




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