Mandatory installation. Big Fish Easy Search is a kind of search software, and the search content is relatively complete. When users visit the website, the browser will hijack and interfere with the operation of other software, and they are forced to install big fish easy search. "Rogue software" is software between viruses and regular software. If there is rogue software in the computer, when users use the computer to surf the Internet, windows will pop up constantly, and the computer browser will be inexplicably modified and many task bars will be added. When a user opens a webpage, the webpage will become an irrelevant and unfamiliar picture.