If your Google Chrome is infected with a virus, then you can notice certain changes in your browser which you haven’t done. Besides that, the unusual behavior or encountering too many ads is surely a sign your chrome is infected. Your Google Chrome’s homepage/new tab is changed with some unknown program. The default search engine is altered to some unknown address without your permission. Unwanted Chrome extensions/add-on or toolbars installed. For instance, Web discover Browser frequently opens up unknown pages or redirects to questionable sites; You see lots of pop-up ads that ask to update software, virus alerts or survey pages. Your browser seems hijacked, pages load slowly and performance is too dull.