All games, websites, and such go through constant attempts like this. I am sure aeria is doing everything they can to keep people safe.
My personal suggestion is to have a different password for every account you have so that if one gets cracked, you still have the others safe.
My aeria has one, ea different, etc... If you use the websites regularly, before long, you won't even realize you have different passwords for each or that you put in a different one for each. Good luck superman on this and thanks for updating us.