Which type of data is classified as Sensitive Authentication Data?

Sensitive Authentication Data refers to specific types of information that are critical for ensuring secure payment card transactions. This includes data that can be used to authenticate the cardholder and authorize transactions. Magnetic stripe data or equivalent on a chip is classified as Sensitive Authentication Data because it contains information such as the cardholder's name, account number, expiration date, and security codes—all of which can be used to create counterfeit cards or conduct fraudulent transactions if compromised.

The other options do not qualify as Sensitive Authentication Data. Customer email addresses are considered contact information and do not directly relate to the authentication process. Basic personal identification involves data like names and addresses, which, while sensitive, does not pertain specifically to the mechanisms used to authenticate payment cards. Transaction history provides information about past transactions but does not serve as an authentication mechanism itself. Thus, only Magnetic stripe data or equivalent on a chip fits the definition and context of Sensitive Authentication Data.