Scenario

Support agents must confirm a card with the customer by reading back only the last four digits. The full number is stored for settlement. Which approach matches the agent’s screen?

Concepts and strategies to protect data

AMasking — display the last four and replace the restBEncryption at rest, and show the decrypted number because the agent is trainedCHash the PAN and show the hash to the customerDWrite the full number on a sticky note so the agent does not have to query it twice

Pick an answer. You’ll see if it’s right. The longer explanation is what a plan opens.

Why

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