my bank details have definately been accessed and money stolen I am not saying it is definately linked to this as I don't know yet am seeing bank tomorrow.I strongly suspect a link but we shall see. will post more as i know it.
Recently we learned that it is probable that the intruders obtained a copy of a backup file with information about Steam transactions between 2004 and 2008. This backup file contained user names, email addresses, encrypted billing addresses and encrypted credit card information. It did not include Steam passwords.
We do not have any evidence that the encrypted credit card numbers or billing addresses have been compromised. However as I said in November it's a good idea to watch your credit card activity and statements. And of course keeping Steam Guard on is a good idea as well.
apparently the hackers also stole credit card data, http://store.steampowered.com/news/7323/
It seems that's a feature of the interface more for your convenience, rather than it having anything to do with the records Valve keep for their own use.That's unfortunate. Although I had steam guard on so it didn't affect me (I also don't think I had credit card info saved, but I digress).
I also doubt that this is still of the Steam hack.