dfn.donetools.net popups appear in your browser, for example and in our case at Google Chrome, but it might also happen in Internet Explorer or Mozilla Firefox. This dfn.donetools.net popups are caused by a browser extension called LyricsFriend, it is also known by LyricsSay, HD Plus, LyricXeeker, DownloadTerms, a2zLyrics, Vid-Saver, or ElectroLyrics, LyricsWoofer and probably more. These malicious browser extensions use popups to promote ads thru this website. This website dfn.donetools.net are simply used to send traffic to partners in order to make money from these ads. These lyrics browser extensions are also responsible for inline-advertisements in websites, it will promote all kind of deals thru “Better Deals” and the superfish.com domain.
This malicious browser extensions that cause the dfn.donetools.net popups, are made for one thing, and one thing only. To investigate your browsing behavior and to make money by advertisements.
It is advised to always read the Terms and Agreements before installing software on your computer. Do never click too fast thru the installation process [Next] button of software as you will agree to software you might not want to install. If the installer offers a Advanced or Custom option button, click it to find out if there is any other malicious software offered and installed during the installation process.