These days there are several other heuristics that are more easy to access. It was, back in the day when java applets and Microsoft Silverlight were a thing. Websites don't use MAC addresses as a heuristic anymore because it isn't easy to access anymore. This r ange is known by brute-force and gives a good enough chance that it is actually a vm. What happens is that when you run a vm, vm software like VirtualBox or VMware will always set the vm's MAC ending in a certain range. They don't automatically tell that 'hey this browser is running inside a vm'. Which means, you need to give a site permission to read it.Īnd MAC address is just a heuristic. You need to install a browser plugin like a Java Applet or an ActiveX component for the site to be able to read your MAC address.

So no, just changing it won't prevent websites that you are running the browser in a vm.Īnd a website itself can't read your MAC address through your browser. Click to expand.Your MAC range isn't the only identifier that tells a website that you are running in a vm.

Best web browser for mac vm