This was revealed by the developer/publisher’s official blog, Bethblog. According to the site:
Over the past weekend, a hacker group attempted an unlawful intrusion of our websites to gain access to data. We believe we have taken appropriate action to protect our data against these attacks. While no personal financial information or credit card data was obtained, the hackers may have gained access to some user names, email addresses, and/or passwords. As a precaution, we recommend that all our fans immediately change passwords on all our sites — including our community forums, statistics site, and here on the blog.
If your username/email address/password is similar to what you use on other sites, we recommend changing the password at those sites as well. As we don’t know what further plans the hackers may have, we suggest that you keep an eye out for suspicious emails and account activity.
Let us know if you’ve been informed of this from Bethesda.
