Search.instasrch.com is another browser hijacker, changing browser settings, including the default search engine and replacing the homepage on http://search.instasrch.com/search. These changes can not be undone later.
If you notice that your browser homepage is changed to https://bronav.com, then this probably means that your PC is infected with Bronav.com browser hijacker. Bronav.com comes in the form of a browser extension and changes the settings of your browsers.
Search.stosgame.com search page changes the homepage in all your browsers on http://search.stosgame.com/. According to the developers, this is designed to improve the quality of search and experience of browsing. However, this is a lie.
Search.hinstantgamesnow.com is a browser hijacker, positioning itself as a useful search page, providing quick access to sites dedicated to arcade games and other game content. Also, the developers claim that Search.hinstantgamesnow.com has the functions of a conventional search engine, improving the quality of search results.
Search.playnsearch.com is a search page, coming in the form of a browser extension, replacing the default homepage and other settings for browsers installed on your system. Also, it replaces shortcuts on the desktop in order to redirect the user to third-party sites each time a certain browser is launched.