If you installed search.fbdownloader on your computer then it must be infected from then on. search.fbdownloader can be installed in different web browser like: Internet Explorer, Mozilla Firefox and Google Chrome. Once you install and open it with your web browser, you will find all the default settings have been vimodified by the search.fbdownloader. It would redirect you to the Search.fbdownloader.com website whenever you try to search. We call such behavior as the browser hijack academically.search.fbdownloader is usually installed to your browser by bundled software that comes along with applications you download from the internet and also can be received in a spam email. Most of the pop ups caused by Search.fbdownloader.com are disguised as PC security alerts. These are scams and may send even more malware to your already hijacked computer. Therefor, it is an emergency issue for you to remove the search.fbdownloader.