Defense supply chain
Audit logging, incident handling and USB control for defense suppliers.
Security built for defense suppliers
Suppliers need to protect customer information while continuing to deliver their work. A focused logging, data-protection and incident process creates evidence the business can understand and maintain.
Requirements
| Req | Requirement | Points | Security function |
|---|---|---|---|
| 3.3.1 | Create and retain audit logs. | 5 | SIEM → |
| 3.3.2 | Trace actions to individual users. | 3 | SIEM → |
| 3.3.4 | Alert on audit logging failure. | 1 | SIEM → |
| 3.3.5 | Correlate review, analysis and reporting. | 5 | SIEM → |
| 3.6.1 | Operational incident handling. | 5 | SOAR and SIEM cases → |
| 3.6.2 | Track, document and report incidents. | 5 | SOAR and SIEM cases → |
| 3.8.7 | Control removable media. | 5 | DLP → |
| 3.14.6 | Monitor systems and traffic for attacks. | 5 | SIEM → |
SPRS score
The assessment methodology gives some requirements greater weight, including important logging, incident-handling and media controls. Use the applicable method to prioritize gaps, then demonstrate how each control operates rather than treating a software installation as completion.
32 CFR 170.22
An affirmation needs a current picture of the organization’s implementation. Retained logs, incident history, reviews and documented changes help the responsible official examine the evidence behind it.
NIST SP 800-171 3.8.7
Production may depend on removable media for legitimate work. Device rules can restrict permitted drives and users, with time-limited or approved exceptions recorded for review.
DFARS 7012
Local hosting gives the supplier control over where monitoring data is processed. The deployment should still identify CUI flows, service providers and the contractual requirements that apply to them.
By rule
3.3.1
Create and retain audit logs. a SIEM, with retention set per source.
3.3.2
Trace actions to individual users. a SIEM ties each event to a user.
3.3.4
Alert on audit logging failure. a SIEM alerts when a source goes silent.
3.3.5
Correlate review, analysis and reporting. a SIEM links related events into one case.
3.6.1
Operational incident handling. a SIEM cases, with SOAR recording each step.
3.6.2
Track, document and report incidents. SIEM cases and SOAR history form the incident record.
3.8.7
Control removable media. DLP allows or blocks each USB device by serial number.
3.14.6
Monitor systems and traffic for attacks. a SIEM correlates host and network logs, and behavioral detection flags unusual behavior.
Questions
Does it add a cloud provider to our scope?
The core products can run on the supplier’s infrastructure. The proposed configuration makes any external connections and service-provider access explicit for scoping.
Can we control USB drives on the shop floor?
Yes, by make or serial number. An exception can wait for a manager’s approval.
Who handles an incident?
The assigned security team or managed service provider follows the agreed incident procedure. Ownership, approvals and actions remain in the incident record.
What stays with the supplier?
The supplier remains responsible for its assessment, affirmations and the IT and security staff operating its program. Product records support those responsibilities.
Guide
How do small defense suppliers prepare for CMMC?
Define the systems and CUI in scope, assess the applicable requirements and close gaps with evidence of operation. Logging, incident handling and media control are useful starting points, alongside the rest of the required controls. Track remediation and any permitted plan of action and milestones (POA&M).
What is an SPRS score?
An SPRS score records the result of a NIST SP 800-171 assessment submitted to the Supplier Performance Risk System. The score should be supported by the applicable assessment method and implementation evidence.
Does a SIEM help with NIST 800-171?
Yes. A SIEM supports the audit and accountability requirements, 3.3.1 to 3.3.8, and incident tracking under 3.6.
How ARRTECH takes care of defense supplier security
Connects security activity into a signed record, giving incident decisions and board reporting evidence that can be independently verified.
Protects intellectual property and customer trust, with content-aware controls that let organizations adopt AI on their own terms.
Expands response capacity through automation, with defined human authority and a record of who approved what.
Finds changes in behavior that predefined rules miss, connecting the signs of an attack so teams can understand what warrants action.
Investigates alerts, tests explanations and prepares the evidence, giving analysts more capacity while people retain authority over the response.
