AC.L1-b.1.i
Sample: MetLimit information system access to authorized users, processes acting on behalf of authorized users, or devices (including other information systems).
CMMC Level 1 sample
A sample L1 Starter file: scope assessment, essential policies, evidence guidance and an SPRS overview. Statuses are fictional working notes.
| Area | Sample boundary decision |
|---|---|
| Included | Work email, managed office computers, contract folder, office network, printer and paper storage. |
| Excluded by design | Public marketing site and guest Wi-Fi. Validate that no FCI crosses into either. |
| Assumption to confirm | This sample handles FCI. Any CUI requires a separate scope and requirement review. |
| Sample status | Requirements |
|---|---|
| Met | 8 |
| Partly met | 5 |
| Not met | 2 |
The requirement text below is from FAR 52.204-21(b)(1). Practice IDs follow the DoD CMMC Assessment Guide, Level 1, Version 2.13. Both were fetched 2026-10-18.
Sample labels "Partly met" and "Not met" identify work remaining. Official Level 1 requires every applicable requirement to be MET and permits no POA&M. A readiness action list does not create a conditional Level 1 status. 32 CFR 170.15(a)(1).
Limit information system access to authorized users, processes acting on behalf of authorized users, or devices (including other information systems).
Limit information system access to the types of transactions and functions that authorized users are permitted to execute.
Verify and control/limit connections to and use of external information systems.
Control information posted or processed on publicly accessible information systems.
Identify information system users, processes acting on behalf of users, or devices.
Authenticate (or verify) the identities of those users, processes, or devices, as a prerequisite to allowing access to organizational information systems.
Sanitize or destroy information system media containing Federal Contract Information before disposal or release for reuse.
Limit physical access to organizational information systems, equipment, and the respective operating environments to authorized individuals.
Escort visitors and monitor visitor activity; maintain audit logs of physical access; and control and manage physical access devices.
Monitor, control, and protect organizational communications (i.e., information transmitted or received by organizational information systems) at the external boundaries and key internal boundaries of the information systems.
Implement subnetworks for publicly accessible system components that are physically or logically separated from internal networks.
Identify, report, and correct information and information system flaws in a timely manner.
Provide protection from malicious code at appropriate locations within organizational information systems.
Update malicious code protection mechanisms when new releases are available.
Perform periodic scans of the information system and real-time scans of files from external sources as files are downloaded, opened, or executed.
Sample evidence checklist. Collect records that show each practice in use, such as visitor logs and a sign-in walkthrough.
| Evidence | Sample owner and review |
|---|---|
| Authorized accounts and permissions | Office lead: compare the user list to current staff and approved roles. |
| External connections and public content | Technical lead: list approved connections, data restrictions and publication reviews. |
| Authentication and managed devices | Technical lead: retain settings evidence and an observed sign-in walkthrough. |
| Media disposal and physical access | Office lead: retain disposal records, visitor logs and key access records. |
| Network boundaries and public systems | Technical lead: retain the network diagram and boundary configuration evidence. |
| Updates, malware protection and scans | Technical lead: retain update records, protection status and scan schedules with results. |
Sample policy excerpt and operating procedure.
Only approved staff may use the contract folder. The office lead records approval before access is granted. Staff keep contract files in the designated work system. Visitors stay with an authorized escort. Paper contract material stays in controlled storage and goes through approved disposal.
Sample procedure: approve the account and role, verify the configured access, record the review, and remove access when the role ends. The evidence owner retains the record and checks the FCI boundary when systems change.
These are public program dates, separate from the fictional company statuses. A contract determines the requirement that applies.
| Date | Rule and milestone |
|---|---|
| October 15, 2024 | CMMC program final rule published. Rule source |
| December 16, 2024 | CMMC program rule effective. Rule source |
| September 10, 2025 | DFARS acquisition rule published. Rule source |
| November 10, 2025 | DFARS rule effective. Phase 1 begins with Level 1 and Level 2 self-assessment requirements in applicable awards. Rule source |
| November 10, 2026 | Phase 2 begins one calendar year later; Level 2 third-party assessment requirements expand. Rule source |
| November 10, 2027 | Phase 3 begins; further Level 2 and Level 3 requirements apply. Rule source |
| November 10, 2028 | Phase 4 begins: full implementation for applicable contracts and option periods. Rule source |
Phase 2 through Phase 4 dates are calculated from the one-calendar-year intervals in 32 CFR 170.3(e), anchored to the DFARS effective date. Sources fetched 2026-10-18.
Level 1 uses an annual self-assessment with results entered in SPRS. A senior affirming official submits the affirmation after assessment and annually thereafter. The organization retains its assessment evidence for six years from the CMMC status date. Assessment and retention: 32 CFR 170.15; annual affirmation: 32 CFR 170.22. Sources fetched 2026-10-18.
Sample coaching agenda: confirm the FCI boundary, review each readiness note against evidence, assign unresolved work and explain the SPRS fields. ThinkCodec provides readiness guidance. The company implements safeguards, verifies the evidence and submits its own assessment and affirmation.
Bring the contract request and the evidence you already have. Agree the consulting scope and the company's implementation tasks before work starts.
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