Search.protectionapps.live is a browser hijacker that will attempt to commandeer your browser search and homepage. This Potentially Unwanted Program (PUP) will send you to malicious websites to get money from you or infect your computer further. It may also prevent you from changing your settings back.
Search.protectionapps.live is usually installed bundled with the Wowsearch browser extension without you knowing. Remove it immediately.
