I bought one at Blizzard's Store. Under $10. Well worth it.
One of my friend's husband had his account hacked into 3 times in 2 weeks. Sold and deleted stuff. Blizzard was able to restore it. She bought an Authenticator for her and her husband.
So I bought one too!!
After alot of hard work on your toon's and Gold who wants to lose it all??
So you guys who are saying Nui compromised your account and hacked into it... LOL. Get the Authenticator.
I love Nui!!! It is the best out there!!
CatfishKnight