AHuxley writes "A VPN flaw announced at the Telecomix Cyphernetics Assembly in Sweden allows individual users to be identified. 'The flaw is caused by a combination of IPv6, which is a new Internet protocol due to replace the current IPv4, and PPTP (point-to-point tunneling protocol)-based VPN services, which are the most widely used. ... The flaw means that the IP address of a user hiding behind a VPN can still be found, thanks to the connection broadcasting information that can be used to identify it. It's also relatively easy to find a MAC address (which identifies a particular device) and a computer's name on the network that it's on.' The Swedish anti-piracy bureau could already be gathering data using the exploit."
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