unauthorized access
nounverified·updated May 9, 2026
Access to information or system components that ( a ) has not been approved by a person designated to do so by management and ( b ) compromises segregation of duties, confidentiality commitments, or otherwise increases risks to the information or system components beyond the levels approved by management (that is, access is inappropriate).
polysemousMWETSP Section 100
Senses
National Initiative for Cybersecurity Careers and Studies (NICCS) Cybersecurity Lexicon
Any access that violates the stated security policy.
NIST Cybersecurity Framework
Occurs when a user, legitimate or unauthorized, accesses a resource that the user is not permitted to use.
NIST SP 800-171r3attested usage pack match
No definition is given in NIST SP 800-171r3. The term is attested in use at 6 citations in that document; a definition is pending curation.
Classifications
Entity Type
Event92%llm-generatedllm:claude-haiku-4-5
?unassignedlast reviewed —
Sensitivity
Regulated85%llm-generatedllm:claude-haiku-4-5
?unassignedlast reviewed —
Information Class
unclassified
Variants
- synonym
- unauthorised access
- plural
- unauthorized accesses
- possessive
- unauthorized access's
- pluralpossessive
- unauthorized accesses'