Currently if some one logs into an account from a network not currently on the accounts list of approved networks an E-mail gets sent to that accounts e-mail address with a link to click to be able to approve the connection.
I would like to recomend the following change:
The E-mail should contain a temporary serial code that is entered on the official GW2 website to take the person to a page where they can then either approve of specificly block all attempts from that network.
The reason for the code instead of a link is simple, I’m afraid some one will eventualy start spoofing the official E-mails in an attempt to get people to click the links that will instead lead to a fake website that will either install harmfull programs or try to steal your information.