Encryption makes more sense as Insulation has a completely different meaning with reference to the question itself.

The correct answer is A. Encryption. Data fragmentation alone may not provide sufficient security measures to protect data. However, when encryption is combined with data fragmentation, it can significantly enhance security. Encryption ensures that even if an unauthorized entity gains access to fragmented data, the encrypted pieces are unintelligible without the corresponding encryption keys. This adds an additional layer of protection to the fragmented data and helps safeguard its confidentiality.

A. Encryption Data fragmentation involves dividing data into smaller pieces or fragments and distributing them across different locations or systems. This technique can help mitigate the impact of a data breach by making it more difficult for an attacker to access and reconstruct the complete data set. However, data fragmentation alone does not provide confidentiality for the individual data fragments. To ensure the confidentiality of each fragment, encryption can be used. By applying encryption to the fragmented data, even if an attacker gains access to one or more fragments, they would not be able to decipher the sensitive information without the encryption key. This provides an additional layer of security and confidentiality to the fragmented data.

Definitely not E. CCSK Study Guide pg 141: Insulation of clients. In some cases, SecaaS can intercept attacks before they hit the organization directly. For example, spam filtering and cloud-based Web Application Firewalls are positioned between the attackers and the organization. They can absorb certain attacks before they ever reach the customer’s assets

In the context of data fragmentation, A is the closer answer compared to E.

Answer A & only A