Plexita Search is a browser extension that will supposedly expedite searching and easy browsing. However, it is found to be a browser hijacker that will attempt to commandeer or redirect your browser search and homepage to plexita.com. Search results generated by this browser hijacker will send you to malicious websites to get money from you or infect your computer further. It will also display unwanted ads and may prevent you from changing your settings back.
Plexita Search is usually installed through bundled software without you knowing. Remove it immediately.