The best way to mitigate the risk of customer identity theft is to implement layered security. Layered security is a defense-in-depth approach that applies multiple and diverse security controls at different levels and stages of the information system and the data lifecycle. Layered security can include physical, technical, and administrative controls, such as locks, firewalls, encryption, authentication, authorization, backup, audit, and policy. Layered security can help to protect the customer data and identity from unauthorized access, use, modification, disclosure, or destruction, by creating multiple barriers and deterrents for potential attackers, and by reducing the impact and likelihood of a successful breach. Layered security can also help to comply with the legal and regulatory requirements and standards for data privacy and protection, such as the Gramm-Leach-Bliley Act (GLBA), the Fair Credit Reporting Act (FCRA), and the Payment Card Industry Data Security Standard (PCI DSS)123.The other options are not the best way to mitigate the risk of customer identity theft, although they may be useful or complementary to layered security. Implementing monitoring techniques is a part of the layered security approach, but it is not sufficient, as it mainly focuses on detecting and responding to the incidents, rather than preventing or deterring them. Outsourcing to a local processor is a business decision that may or may not improve the security of the customer data and identity, depending on the quality and reliability of the service provider, and the terms and conditions of the outsourcing contract. Conducting an awareness campaign is a good practice that can help to educate and inform the customers and the employees about the common types, methods, and indicators of identity theft, and the best practices and precautions to prevent or report it, but it does not directly apply or enforce any security controls to the information system or the data.
