An organization has implemented a new backup process which protects confidential data by encrypting the information stored on backup tapes. Which of the following is a MAJOR data confidentiality concern after the implementation of this new backup process?
Correct Answer: B
Encrypting the information stored on backup tapes is a good way to protect the confidentiality of the data.
However, this does not address the issue of pre-existing backup tapes that may contain unencrypted or poorly encrypted data. These tapes may still be accessible by unauthorized parties or subject to theft or loss.
Therefore, the organization should also implement a secure disposal or destruction policy for the pre-existing backup tapes, or encrypt them with the same level of protection as the new backup process.
References: CISSP All-in-One Exam Guide, Eighth Edition, Chapter 8: Cryptography and Symmetric Key Algorithms, page 497; CISSP Official (ISC)2 Practice Tests, Third Edition, Domain 3: Security Architecture and Engineering, Question 3.12, page 154.