Custom data elements defined by IBM. Information about your IBM computer system (for example, a computer serial number for an IBM personal computer you may have registered online). User ID created by registering for an IBM application or service. Password created by the user when registering for an IBM application or service. Information about products being purchased and payment method. Information needed to process payment for an online purchase, including credit card type, number, and expiry information. Content posted to public forums or discussion groups.