ある企業は、データベースに保存されているクレジット カード情報が公開されたり再利用されたりするのを防ぎたいと考えています。ただし、現在の POS システムは暗号化をサポートしていません。この情報を保護するのに最も適しているのは次のうちどれですか?
(CompTIA Security+ SY0-601 ドキュメントからの関連する説明と参考文献を正解オプションについて教えてください)
正解:B
Tokenization replaces sensitive data with non-sensitive data, such as a unique identifier. This means that the data is still present in the system, but the sensitive information itself is replaced with the token. Tokenization is more secure than masking, which only obscures the data but does not eliminate it. DLP is not suitable for this task, as it is designed to prevent the loss or leakage of data from the system. SSL/TLS can be used to secure the transmission of data, but it cannot prevent the data itself from being exposed or reused. For more information, please refer to CompTIA Security+ SY0-601 Exam Objectives, Section 3.3: Explain the security purpose of authentication, authorization and accounting (AAA) services, and Section 4.7: Explain the purpose and characteristics of various types of encryption.