If you are one of the millions of people who have suffered a browser hijacking, you likely know it, and you clearly remember what you were doing when it happened. The best known form of browser hijacking is when a sudden flood of pop-ups, many of them obscene, explode over your screen and you are forced to use the CTRL-ATL-DEL sequence to close your browser and regain control of your computer. Here is a quick guide you can use to identify the different kinds of browser hijackings and how you can rid yourself of them once and for all.

What is a browser hijack?

A browser hijack is exactly as it sounds: an attempt from a third party to take control of your web browser and use it for their own nefarious purposes. Some browser hijacks can be done to spread awareness of a particular website, but aren’t actually dangerous. In some cases, though, they can be malicious, and they can steal information like passwords you have saved into your browser automatically. Perhaps the most common type of browser hijack is done by a program that installs itself on your computer without you knowing. The program will add several favorites to your list without your knowledge, and it will change the start page of your browser and even some registry keys. When you attempt to reset your browser, you will be unable to do so.

With these types of hijacks, you are also falling victim to keyloggers that record passwords for sensitive sites like online banking and email. How can you tell if you have a browser hijacking program on your machine? Let’s look.

What might you notice?

The most obvious sign of a browser hijack is that your start page has been changed and you can’t change it back. You may notice a complete slowdown in the performance of your computer since many browser hijacks work as fully functional programs that run in the background of your computer from the time you turn it on to the time you turn it off. These programs are often resource hogs that cause everything else on your machine to run slower.

You may also notice that a whole new set of bookmarks have been added to your browser that you’ve never seen before. Some websites have been known to add one bookmark (usually one for that particular site), but if you see a whole new folder full of questionable bookmarks, you may have a browser hijacker installed on your machine.

How did it get there?

Just like most malware programs, browser hijackers find their ways onto your machine in a number of different ways. The most common way is via peer to peer software programs like BitTorrent and Kazaa. Often times, the person who you are getting a file from doesn’t know that they are sending an infected file to you so your infection isn’t intentional.

A second spot where many people receive browser hijacker programs from is bundled with freeware or shareware programs downloaded from sources that aren’t trustworthy. That’s why it is always a good idea to download your free software programs only from the manufacturers’ site or from a site that promises that they are virus and spyware free.

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