Exclusiverewards.cima.gdn is listed as web browser hijacker. Because it can occupy the whole browsers and make them for its use. Its purpose is of course for money. So you could even guess what please do to your PC. It should let you to visit its cooperated websites or bring in its associated malware. How can it do that? It should change your homepage and search engine. Then please fabricate a full page of fake search results. So you will click on them. Besides, Exclusiverewards.cima.gdn could also turn up the ads by adware directly on the browsers. As a result, you get malicious items, while it gets paid.