So what should you do if you want to get rid of your Xbox 360 but you don’t want your personal information compromised? Podhradsky recommends detaching your 360’s hard drive, hooking it up to your computer, and using a sanitization program like Darik’s Boot & Nuke to wipe everything out. Just reformatting the system isn’t enough.
via Hackers Can Steal Credit Card Information From Your Old Xbox, Experts Tell Us.