A MAC detects modifications that are intentional and also:
AAdditional
BAdjustable
CAdmissible
DAccidental
Answer & Solution
Correct answer: D. Accidental
1. A MAC does not distinguish an attacker from a fault.
2. Any change to the data breaks it.
3. A MAC detects both accidental and intentional modifications of data.
4. So the answer is accidental.
_Source: NIST SP 800-175B Rev. 1, 'Guideline for Using Cryptographic Standards in the Federal Government'_
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