即使你用咗　ＶＰＮ，ＰＲＯＸＹ，ＴＯＲ　ＳＥＲＶＩＣＥ，你的真實 IP 仍然俾泄露。

firefox 可照下文停止，chrome 現時無辦法。

http://www.unhappyghost.com/2015/02/webrtc-killing-tor-vpn-ip-masking-privacy.html

WebRTC killing Tor, VPN, IP Masking, Privacy

Update (Feb-26-2015): Few readers on Reddit raised questions about, what does TOR have to do with this bug as, the Tor bundled browser, is a very highly stripped down browser keeping privacy and security in mind and could not be affected by this bug, but in fact many TOR users are unaware that the Tor browser is NOT Firefox browser and they end up treating it like Firefox using all sorts of add-ons on it. But whats more important is that the real discussion is NOT just about the Tor browser, but Tor as a service being used through another browser like Chrome [Video] still doesn't give you the expected privacy what TOR has to offer. So, all I say is guys, lets look at this problem and find a way to fix it than get into discussions which doesn't lead us anywhere.