#18 - May 31, 2010, 8:53 p.m.
Well, I can only tell you this was indeed foreign, and malicious.
Also, looks like your password was changed from a foreign country on 5/12 - that should always be a red flag that something is afoot when you get a password change you did not request.
There are a few possibilities here.
You have as yet unidentified malware.
Your email account itself is compromised and they are pulling the information directly.
Another system was used and that one is infected (even to log into the armory or this website).
Phishes or other forms of social engineering.
Even those aren't all the ways this happens, but those are the most common. Fake websites are also very active at the moment pretending to be Blizzard - and also they are being setup that look like popular addon sites.
In addition to scanning for malware, you'll want to make sure your Flash, etc. is updated. One does not have to visit a 'bad' site to come across an infected web banner if Flash hasn't been updated to repair the vulnerabilities they've been using.
This compromise has already been reported and put into process, looks like a friend reported this for you. It may be some days before you'll hear from your Specialist.
I do wish you all the best.