There has been a rash of phishing emails, scams and hacks that have plagued GW2′s launch. Well, Arenanet has not been sitting idly by as they are working on different solutions. They have come up with a list of precautions that you should take and are actively working on something that should help secure your account more.
Guild Wars Account E-mail Authentication is a new feature that we’ll be introducing to Account Management that will provide you with extra security by requiring you to verify every login request from a new location with your e-mail account.
Whenever you attempt to login from a new location, we will send an authentication request e-mail that contains both a description of where you are logging in from, and a link you click to authenticate the login request. We decided to implement this as a mechanism that anyone can benefit from, since it’s free and easy for anyone to sign up for a secure e-mail account. Keep in mind, when you click on your authentication request e-mail, we will never ask you to enter any login information. Verification requests are only sent after you attempt to login, not before.
See the Account E-mail Authentication article in the Guild Wars 2 Knowledge Base for detailed instructions on how to take advantage of this feature.
You can find the rest of the article here.