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 flv player addon-buttonutil64.exe, “FLV Player Addon exe” by Porter Studio Plus has been detected as adware by 1 anti-malware scanner with very strong indications that the file is a potential threat. It is built using the Crossrider cross-browser extension platform. While the file utilizes the Crossrider framework and delivery services, it is not owned by Crossrider. It is distributed as part of the Brightcircle group of browser-extensions.