This adware is a web browser extension that will inject advertising in the browser in the form of unwanted banners and text-links which may link to malware sites and install unwanted software. The application internet speed checker-buttonutil.exe, “Internet Speed Checker exe” by Naruto Source has been detected as adware by 28 anti-malware scanners. This file is typically installed with the program Internet Speed Checker by Sailor Project which is a potentially unwanted software program. It is built using the Crossrider cross-browser extension toolkit. While the file utilizes the Crossrider framework and delivery services, it is not owned by Crossrider. It is part of the Brightcircle group of web-extensions that inject advertisements in the browser.