If you are seeing advertisements while browsing the web that are labeled Ads by Cloudscout then you have the adware program called CloudGuard installed on your computer. CloudGuard claims that it is a parental control and protection software that blocks access to adult, gambling, and potentially dangerous sites. In my testing of this software I was never once blocked from visiting unsavory sites, but I was bombarded by Cloudscout advertisements on almost every site I visited. This is because CloudGuard injects its own ads into sites you visit even if those sites do not normally display ads. These injected Cloudscout ads are done in an intrusive manner and make it difficult to use web sites that are normally easy to read and navigate.

http://www.bleepingcomputer.com/virus-removal/remove-ads-by-cloudscout