If you cannot browse the Internet because some odd pop-up ads are generated, check whether they are sent from dfn.donetools.net, which is a server that is used by an adware program. If you find that those ads are retrieved from the server in question, you should take immediate actions to remove the program which is responsible for displaying them on the screen. The information about the advertisements you have already seen is stored in a tracking cookie, which should also be eliminated from the browsers. The suspicious dfn.donetools.net pop-up advertisements are associated with YieldManager, which enables website owners to use YieldManager cookies for monitoring how their websites are being browsed.
It is advisable that you remove dfn.donetools.net pop-ups in order to protect your privacy and be able to browse the Internet without obtrusive pop-up contents. You may find interstitial advertisements, web-banners and other forms of advertisements generated by dfn.donetools.net. The ads may suggest that you download a computer application, take part in a survey, or purchase some product or service.
Dfn.donetools.net ads are displayed to raise revenues and increase the number of clicks. In order to prevent computer infections, you should avoid clicking on those advertisements because they may take you to hacked websites. Even a legitimate website may be corrupted by cyber criminals in order to exploit the vulnerabilities of the system and inject malicious files on the computer, so do not risk your privacy – ignore those annoying pop-up ads and remove the tracking cookie and the unwanted adware application which are responsible for the display of dfn.donetools.net ads.
The removal of dfn.donetools.net pop-up should be carried out by a reliable spyware removal tool. We advise you to use SpyHunter because this real-time anti-spyware program can eliminate various computer threats, including rootkits, worms, ransomware infections, and many other threats which you may be unaware of. Install this software if you want to browse the Internet safely because it can safeguard the system against computer threats and also save your time.