Browser hijacking Some adware uses Sear4m.xyz to cause a user to click on Sear4m.xyz ads. Once Sear4m.xyz is installed, it changes the default DNS settings of browsers like Mozilla Firefox, Google Chrome, and Internet explorer, and often redirect to various fake websites which are often laiden with viruses. Searchassist is a browser hijacker which piggybacks on other downloads from untrusted websites. It will change the new tab homepage to searchassist.net and opens searchassist on browser start-up. It is stubborn, and if not uninstalled, will repeatedly change the browser tabs and homepage settings. It works with Firefox, Safari, Chrome, and Internet Explorer, though
Firefox reliability, security, and standards conformance, finishing substantially ahead of Chrome, the runner-up. "Tom's Hardware" concluded by declaring Firefox the "sound" winner of the performance benchmarks. In January 2014, a benchmark testing the memory usage of Firefox 29, Google Chrome 34, and Internet Explorer 11 indicated that Firefox used the least memory when a substantial number of tabs were open. In benchmark testing in early 2015 on a "high-end" Windows machine, comparing Microsoft Edge, Internet Explorer, Firefox, Chrome, and Opera, Firefox achieved the highest score on three of the seven tests. Four different Javascript performance tests gave conflicting results. Firefox bested