If you have seen that your search queries are redirected through us.yhs4.search.yahoo.com, then this most probably means that your browser has been hijacked by some program, which is classified exactly like this – browser hijacker. Just as an example, we can examine default-search.net browser hijacker. If you have this potentially unwanted program installed on your PC, then all your search queries submitted through this hijacker will be redirected through us.yhs4.search.yahoo.com. Another fact worthy of paying attention to is that this search redirection is powered by Aztec Media Yahoo Search Results. This is what exactly what the window of your browser…