What Is Weknow.ac?
A browser hijacker may set your browsers’ default search engine to https://www.weknow.ac/search/asset=[…] without your knowledge or agreement and make it difficult for you to change it to something else. Hijackers are usually distributed by free software installers, however in this case users reported to have downloaded a fake Adobe Flash Player update which brought them Weknow.ac hijacker and other malware/adware. You may follow this step-by-step guide to uninstall the browser hijacker and remove Weknow.ac search engine from your browser.