A hacked poll appeared on Battlelog over the weekend asking players about the Battlefield 4 beta in an attempt to steal usernames and passwords.
One on the options on the poll pointed to a website which was acting as a sign up page for the beta. DICE has since responded to the poll claiming that no data was compromised and logins are safe.
“No, logins are safe, there should be an announcement soon with more details. Edit: As a side note, it’s never a bad idea to update/change passwords regularly, but as of right now there is no cause for alarm,” the developer wrote on Reddit. “No, no data was compromised, this was simply an account being compromised.”
So no data was stolen, however it’s probably a good idea to keep rotating your password just to be safe.