I have a Windows 7 computer that is getting infected with spyware/malware/ransomware etc. I keep cleaning the computer using Malwarebytes AND SuperAntispyware AND Avast Boot Time Scan AND Microsoft Security Essentials, but it keeps getting reinfected after a short time. I don't think the problem is with a specific infection per se, but with some kind of weird redirection happening with all or almost all the browsers. The user almost exclusively uses FireFox, and every time the infection reappears it is when she launches Firefox (but not EVERY time). I myself have seen my attempts to go to legitimate websites get redirected to strange URLs like 188.8.131.52 click.gethotresults.com toolbar.inbox.com The redirects seem random in two ways: 1. they don't always go to the same place, 2. sometimes there is no redirect at all and the page you really wanted works fine. I'm sure that whatever is doing this is sometimes redirecting her browser to websites that have malware. What I can't seem to figure out is what is causing this random redirection. It happens in FireFox 14 and IE 10 and Chrome. I know FireFox has its own proxy settings, but I've checked both FireFox and IE for a proxy setting and there is none. I've also checked my hosts file and there is nothing there. I've also checked all three for extensions/add-ons, removed any non-standard search providers, and set all start pages to default. What else could it be?