FasterLight is adware on Microsoft Windows that claims to be a useful web extension, however it is commonly bundled with other free programs that contain adware. It advertises itself as a program that displays coupons for sites the user is visiting and competitive prices when you are viewing product pages at sites like Amazon or BestBuy.
FasterLight is normally downloaded by a pay-per-install program or third party software. If downloaded, the user will be bombarded with ads (such as popups, ad banners, and hyperlinked text. Some popups can be false program updates) on every single website the user visits, sometimes making it impossible to even navigate the internet.
When installed, the service has access to the user's data and can steal their personal information.