Account Security Hackers have lists of email addresses and passwords stolen from other games and web sites, and collected through spyware, and are systematically testing Guild Wars 2 looking for matching accounts. To protect yourself, use a strong, unique password for Guild Wars 2 that you've never used anywhere else! Today a Guild Wars related fan site announced that its account database has been breached. That's important but just one of many apparent breaches of other games and web sites that hackers have been collecting email addresses and passwords from. Protect yourself by using a unique password for each game and web site account you care about, and especially be sure to use a unique password for your Guild Wars 2 account. Source
What I have done to resolve this issue is to create an entirely new email address. I have also made up new passwords for both the email and Guild Wars 2 so that no previous phishing scam can get the information. I would recommend everyone do the same since it is so easy to create a new email account.
Customer Support Our customer support team is prioritizing hacked accounts and other blocking login issues over other types of support requests. If you submit a support ticket for a hacked account, ensure it is properly prioritized by following these instructions. We have now completed prioritized requests submitted prior to Saturday, September 1. If you have an older ticket that has not been completed, that means it's not correctly prioritized. Submit a new ticket using the above instructions, and in the title write, "Hacked Account - Ticket submitted August xx - Ticket number xxxxxx-xxxxxx" (fill in the date and ticket number of your existing ticket), and we will prioritize your existing ticket. In the past 24 hours we helped 2,574 players with hacked accounts and 2,867 players with other blocking login issues get back into the game.