Pop-under advertisements that are initiated by websites that you visit can be blocked from your web browser. Changing the settings in your web browser to block pop-under ads will also prevent pop-up ads from displaying. Pop-unders can only be blocked using your web browser if they are opened by web sites that you visit. Pop-under advertisements that pop as a result of adware installed on your computer must be removed from the system using an adware or spyware removal program. Warnings Writer Bio
