Ultrasurf reputedly turns off SSL certificate checking so they can do man-in-the-middle attacks to steal your login details. But what if ultrasurf is run under wine in linux? Then there would be no internet explorer. Linux's firefox would be set up to use the proxy at 127.0.0.1:9666 provided by ultrasurf and use its own SSL certificate checking. Would ultrasurf still be able to turn off SSL certificate checking and do man-in-the-middle attacks?