Nothing is safe...nor will it be. Ever. It wasn't on the same scale as the PSN breach, but Xbox Live accounts have been hacked and had information stolen.Sober Thal said:-"It is nearly impossible to run a totally secure web presence, especially when you are the size of Sony,"-
So according to this 'Naked Security blog' Sony won't ever be safe. Good to know. They will never get my credit card number. Hurry up Sony, pull your heads out of your asses, and get on the paypal wagon.
http://www.zdnet.com/blog/security/xbox-live-hacked-accounts-stolen/131
The moral of the story is, if you don't want to be vulnerable, don't put ANYTHING online. It severly limits you, but it's literally the only thing you can do.
Hell, after a few hours on Facebook I could get a list of names, social security numbers, and credit card numbers with minimal effort.