Tigger1992 said:
Will you be cancelling your credit card knowing that the encrypted card data on Steam has been accessed?
Protip: try actually reading the notices before you panic.
There is no evidence that they got the card numbers or personally identifying information and no one has reported any fraudulent charges yet.
It's a good idea to change your password, but not much else. Also, most banks are very good about fraudulent charges, so even if a charge did show up, it's usually pretty easy to undo. Unless you're totally oblivious about your bank accounts, which would be silly given how easy it is to check them online nowadays.
martintox said:
I've just uninstalled Steam.
Besides, I've been spending way too much money on it anyway.
See above. They just got the salted and hashed data. The probability of them actually obtaining numbers is unbelievably slim.
I sympathize with you about the money though.