Final answer:
The bank needs to follow up with John to verify the validity of the change of address request to ensure security and prevent fraud.
Step-by-step explanation:
In the case of a change of address request from consumer John, the bank needs to follow up with John to verify the validity of the request due to security and fraud prevention measures. This is because changing a person's address without proper verification can lead to unauthorized access to personal and financial information.
To verify the validity of the request, the bank may use a variety of methods. They may contact John directly using the contact information they have on file, such as calling the phone number associated with his account or sending an email to his registered email address. The bank may also request additional documentation from John to confirm the address change request, such as a copy of his driver's license or a utility bill with the new address.
By verifying the change of address request, the bank ensures that they are providing a secure banking experience to their customers and protecting against potential fraud or identity theft.