CMMC CCP study materials
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CMMC CCP key terms

CMMC CCP · Get comfortable with the vocabulary.

The Cyber AB

The non-profit accreditation body recognized by the Department of Defense that authorizes C3PAOs, certifies individual assessors and professionals, and oversees the integrity and quality of the CMMC ecosystem.

Related: CMMC Third-Party Assessment Organization (C3PAO), CMMC Certified Assessor (CCA), Registered Practitioner (RP)
CMMC Third-Party Assessment Organization (C3PAO)

An assessment firm authorized by the Cyber AB to conduct CMMC Level 2 certification assessments of organizations seeking certification, and to submit the resulting results to the Department of Defense.

Related: The Cyber AB, CMMC Certified Assessor (CCA), Organization Seeking Certification (OSC)
CMMC Certified Assessor (CCA)

An individual credentialed by the Cyber AB to lead or participate in CMMC assessments as part of a C3PAO team, having met training, examination, experience, and continuing-education requirements.

Related: CMMC Third-Party Assessment Organization (C3PAO), Code of Professional Conduct, Conflict of Interest
Organization Seeking Certification (OSC)

A contractor or subcontractor pursuing a CMMC certification that is the subject of an assessment; it defines the scope, implements practices, and supplies evidence to the assessment team.

Related: Assessment Scope, CMMC Third-Party Assessment Organization (C3PAO), Annual Affirmation
Registered Practitioner (RP)

An individual listed in the Cyber AB registry who has completed foundational CMMC training but is not a certified assessor; may help organizations prepare for an assessment.

Related: The Cyber AB, CMMC Certified Assessor (CCA)
Defense Industrial Base Cybersecurity Assessment Center (DIBCAC)

The Department of Defense component that performs government-led cybersecurity assessments of contractors, including Level 3 assessments and participation in voluntary joint assessments with a C3PAO.

Related: CMMC Level 3, Joint Surveillance Voluntary Assessment (JSVA)
DFARS 252.204-7021

The contract clause requiring DoD contractors to achieve and maintain the CMMC level stated in the contract, to affirm continued compliance annually, and to flow the requirement to applicable subcontractors.

Related: Annual Affirmation, CMMC Level 2, Organization Seeking Certification (OSC)
CMMC Level 1

The foundational level, aimed at protecting Federal Contract Information, built from 17 practices derived from FAR 52.204-21 and verified through an annual self-assessment with senior official affirmation.

Related: Federal Contract Information (FCI), Annual Affirmation, CMMC Level 2
CMMC Level 2

The level protecting Controlled Unclassified Information by requiring all 110 security requirements of NIST SP 800-171, verified by self-assessment or, when a contract requires it, by a C3PAO certification assessment.

Related: CMMC Level 1, CMMC Level 3, Controlled Unclassified Information (CUI)
CMMC Level 3

The highest CMMC level, adding selected enhanced requirements from NIST SP 800-172 on top of all Level 2 practices to defend CUI against advanced persistent threats; assessed by DIBCAC.

Related: CMMC Level 2, NIST SP 800-172, Defense Industrial Base Cybersecurity Assessment Center (DIBCAC)
NIST SP 800-172

A NIST publication of enhanced security requirements for protecting Controlled Unclassified Information in critical programs, supplying the additional practices that distinguish CMMC Level 3 from Level 2.

Related: CMMC Level 3, Controlled Unclassified Information (CUI)
Assessment Objective

A specific, testable statement describing what must be true for a practice to be judged met; assessors verify each objective by examining, interviewing, and testing the organization's evidence.

Related: Objective Evidence, Assessment Finding, CMMC Assessment Process (CAP)
Plan of Action and Milestones (POA&M)

A document listing requirements not yet satisfied, the remediation actions planned, responsible parties, and target dates; its use during certification is limited and closure deadlines apply.

Related: Conditional Certification, Delta Assessment, Assessment Finding
Conditional Certification

A Level 2 status granted when a limited number of requirements remain unmet but are covered by an approved plan of action; it becomes full certification once those items are closed within the allowed period.

Related: Plan of Action and Milestones (POA&M), Delta Assessment, CMMC Level 2
Annual Affirmation

A yearly statement by a senior official confirming the organization still meets the requirements of its CMMC level and that its submitted assessment score remains accurate and current.

Related: Supplier Performance Risk System (SPRS) Score, CMMC Level 1, DFARS 252.204-7021
Supplier Performance Risk System (SPRS) Score

A numeric score computed from a contractor's NIST SP 800-171 assessment results using DoD's scoring methodology, submitted by the contractor and used by DoD in source selection decisions.

Related: Annual Affirmation, CMMC Level 2
Controlled Unclassified Information (CUI)

Unclassified information that law, regulation, or government-wide policy requires to be protected or controlled, and that must be marked, handled, and safeguarded according to federal requirements.

Related: Federal Contract Information (FCI), CUI Asset, CUI Enclave
Federal Contract Information (FCI)

Information not intended for public release that is provided by or generated for the government under a contract to develop or deliver a product or service, excluding information supplied by the government to the public.

Related: Controlled Unclassified Information (CUI), CMMC Level 1
Asset

Any component of an organization's environment that can store, process, or transmit data, or that supports such operations; assets are categorized to decide whether they belong inside the assessment scope.

Related: CUI Asset, Security Protection Asset, Assessment Scope
CUI Asset

An asset that stores, processes, or transmits Controlled Unclassified Information, or that can access it; such assets are always in scope and must satisfy the applicable set of CMMC practices.

Related: Controlled Unclassified Information (CUI), Asset, Security Protection Asset
Security Protection Asset

An asset that does not itself handle CUI but enforces or delivers a security capability protecting in-scope assets, such as a firewall, logging platform, or authentication server; it is included in scope.

Related: Asset, CUI Asset, Assessment Scope
Contractor Risk Managed Asset

An asset that could introduce risk to in-scope assets if compromised but does not itself handle CUI, and that may be excluded from assessment scope when documented risk mitigation exists.

Related: Asset, CUI Enclave, Assessment Scope
CUI Enclave

A defined, logically or physically separated portion of an environment where CUI is handled and protected, allowing systems outside the enclave to remain outside the assessment scope.

Related: Controlled Unclassified Information (CUI), Assessment Scope, Contractor Risk Managed Asset
External Service Provider (ESP)

An outside entity that provides services to an organization and may store, process, or transmit its CUI, such as a cloud provider; the relationship and its protections must be documented in scoping.

Related: Assessment Scope, Controlled Unclassified Information (CUI), System Security Plan (SSP)
Assessment Scope

The documented set of assets, people, facilities, and processes that the assessment team will examine because they handle CUI or provide security protection for assets that do.

Related: Asset, CUI Asset, System Security Plan (SSP)
System Security Plan (SSP)

A document describing the system boundary, architecture, and how each security requirement is implemented for the CUI environment; assessors rely on it to understand scope and plan testing.

Related: Assessment Scope, CUI Enclave, External Service Provider (ESP)
CMMC Assessment Process (CAP)

The Cyber AB's published methodology describing how assessment organizations plan, conduct, and report CMMC assessments, including team roles, phases, evidence requirements, and required documentation.

Related: Pre-assessment, Objective Evidence, Assessment Report
Pre-assessment

The opening phase of a CMMC assessment in which the assessment team reviews the organization's scope, system security plan, and supporting documentation to plan testing and flag potential issues.

Related: CMMC Assessment Process (CAP), System Security Plan (SSP), Objective Evidence
Objective Evidence

Verifiable information such as documents, records, configurations, logs, or observed conditions that shows whether an assessment objective is satisfied; it must be recorded and retained by the team.

Related: Assessment Objective, Assessment Finding, Assessment Report
Assessment Finding

A documented determination by the assessment team about whether a given practice or objective is met or not met, supported by recorded evidence and carried into the assessment report.

Related: Assessment Objective, Objective Evidence, Plan of Action and Milestones (POA&M)
Delta Assessment

A follow-up assessment performed to confirm that requirements previously found unmet have been remediated, commonly used when a conditional certification is later upgraded to full certification.

Related: Conditional Certification, Plan of Action and Milestones (POA&M), Assessment Finding
Joint Surveillance Voluntary Assessment (JSVA)

A voluntary assessment in which DIBCAC and a C3PAO evaluate an organization at Level 2 together, giving contractors early exposure to assessment expectations before requirements appear in contracts.

Related: Defense Industrial Base Cybersecurity Assessment Center (DIBCAC), CMMC Level 2, CMMC Assessment Process (CAP)
Conflict of Interest

A situation where an assessor, team member, or their firm holds a personal, financial, or business interest that could bias assessment results; it must be disclosed and avoided or managed.

Related: Impartiality, Code of Professional Conduct, CMMC Certified Assessor (CCA)
Impartiality

The principle that assessment judgments rest solely on objective evidence rather than on commercial pressure, personal relationships, or financial gain, and that assessors remain free of bias throughout.

Related: Conflict of Interest, Code of Professional Conduct, Assessment Finding
Confidentiality

The duty not to disclose or misuse an organization's sensitive information, including CUI, security documentation, and assessment results, encountered during assessment work; formal agreements typically reinforce this obligation.

Related: Code of Professional Conduct, Controlled Unclassified Information (CUI), Assessment Report
Code of Professional Conduct

The Cyber AB's enforceable ethical standards for certified professionals and assessors, addressing integrity, objectivity, competence, confidentiality, and the avoidance or management of conflicts of interest.

Related: Impartiality, Conflict of Interest, Confidentiality
Assessment Report

The formal record produced by the assessment team describing scope, methods, evidence reviewed, findings, and results, which supports the certification decision and later quality reviews.

Related: Assessment Finding, Objective Evidence, CMMC Assessment Process (CAP)