Undoable malicious encryption of data is a case of:

Question

BlackTom AI · Accepted Answer

Integrity in the CIA triad means that data remains complete, accurate, and unaltered except by authorized actions. Malicious, undoable encryption changes the contents of stored data in a way that cannot be reversed, which is precisely an unauthorized modification of the data — a violation of integrity.

Relevant knowledge points:
- CIA triad: Confidentiality (preventing unauthorized disclosure), Integrity (preventing unauthorized modification or corruption), Availability (ensuring authorized access when needed).
- Malicious encryption (for example ransomware that irreversibly re-encrypts files) is an unauthorized transformation of data content, not merely exposure.
- “Undoable” emphasizes permanence: the original content cannot be restored, so the data’s correctness and trustworthiness are lost.

Step-by-step reasoning:
1. Identify the action: Data is encrypted by an attacker without authorization.
2. Determine the effect on the data: Encryption changes the stored bits so the original content is no longer present in usable form.
3. Assess reversibility: The problem statement says the encryption is undoable (irreversible), so the original integrity is permanently lost.
4. Map to CIA: Because the primary impact is alteration/corruption of data content, the violation is of integrity. Availability might be affected as a secondary consequence (users can’t access meaningful data), but the core issue remains unauthorized modification.

Why the correct answer is correct:
- Integrity breach directly matches “unauthorized, irreversible change to data.” The attacker has corrupted the data by encrypting it so it no longer reflects the original trusted content.

Why other categories are not the best match:
- Confidentiality breach involves unauthorized disclosure of data, not transformation; here data isn’t necessarily exposed.
- Availability breach concerns inability to access resources; while encrypted data may be temporarily unavailable, the defining feature here is alteration, not mere unavailability.
- Authentication/non-repudiation issues relate to identity and proof of actions, which are not the primary issue in irreversible malicious encryption.

Conclusion: Because undoable malicious encryption is an unauthorized and irreversible modification of data content, it is an Integrity breach — matching the provided answer.

Undoable malicious encryption of data is a case of:单项选择题

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Undoable malicious encryption of data is a case of:单项选择题