Ox-social.bidsystem.com is a horrible and nasty redirect virus which can sneak into your compromised PC and hijack your browsers to the malicious websites or its own site, including Internet Explorer, Mozilla Firefox, Google Chrome, etc. Furthermore, it is capable to generate a startup registry to make itself activated automatically when you start your Windows. Then, it will degrade your PC performance dramatically and crash down your system arbitrarily. Meanwhile, it can modify your system settings and delete critical files to mess up your system terribly. Worse, its main goal is to steal your sensitive information and privacy to gain illegal benefits. So you should seriously treat this redirect virus and remove it completely without hesitation.