Know about Alhea.com
Alhea.com is deemed as a browser hijacker that is able to take over the home page or new tab of web browsers like IE, Chrome and Firefox once infected. And you will notice that your previous set up is changes to Alhea.com. It aims to replace your search engine with its own and display various pop-up ads in your search results. If you do not remove it in time, you may encounter more serious problems.