SA 15(6) Continuous Improvement

---
name: "SA-15(6)_continuous-improvement"
description: "Require the developer of the system, system component, or system service to implement an explicit process to continuously improve the development proc"
category: "configuration"
version: "5.2.0"
author: "cyberstrike-official"
tags:
  - nist
  - sp800-53
  - rev5
  - sa-15-6
  - sa
  - enhancement
tech_stack:
  - any
cwe_ids:
  - CWE-16
chains_with: []
prerequisites:
  - SA-15
severity_boost: {}
---

# SA-15(6) Continuous Improvement

> **Enhancement of:** SA-15

## High-Level Description

**Family:** System and Services Acquisition (SA)
**Framework:** NIST SP 800-53 Rev 5

Developers of systems, system components, and system services consider the effectiveness and efficiency of their development processes for meeting quality objectives and addressing the security and privacy capabilities in current threat environments.

## What to Check

- [ ] Verify SA-15(6) Continuous Improvement is documented in SSP
- [ ] Confirm control is operating effectively
- [ ] Review evidence of continuous monitoring for SA-15(6)
- [ ] Verify enhancement builds upon base control SA-15

## How to Test

### Step 1: Review Documentation

Examine the System Security Plan (SSP) and related artifacts for SA-15(6) implementation details. Verify the organization has documented how this control is satisfied.

### Step 2: Validate Implementation

```
# For cloud environments, use cloud-audit-mcp tools
# For on-premises, review system configurations directly

# Example: Check if account management policies exist
grep -r "account.management\|access.control" /etc/security/ 2>/dev/null
```

### Step 3: Test Operating Effectiveness

Verify the control is actively functioning, not just documented. Check logs, configurations, and operational evidence.

## Tools

| Tool          | Purpose                           | Usage |
| ------------- | --------------------------------- | ----- |
| Manual Review | Documentation and interview-based | N/A   |

## Remediation Guide

### Control Statement

Require the developer of the system, system component, or system service to implement an explicit process to continuously improve the development process.

### Implementation Guidance

Developers of systems, system components, and system services consider the effectiveness and efficiency of their development processes for meeting quality objectives and addressing the security and privacy capabilities in current threat environments.

## Risk Assessment

| Finding                                         | Severity | Impact                                     |
| ----------------------------------------------- | -------- | ------------------------------------------ |
| SA-15(6) Continuous Improvement not implemented | Medium   | System and Services Acquisition            |
| SA-15(6) partially implemented                  | Low      | Incomplete System and Services Acquisition |

## CWE Categories

| CWE ID | Title         |
| ------ | ------------- |
| CWE-16 | Configuration |

## References

- [NIST SP 800-53 Rev 5 - SA-15(6)](https://csrc.nist.gov/projects/cprt/catalog#/cprt/framework/version/SP_800_53_5_1_1/home?element=sa-15.6)
- [NIST SP 800-53A Rev 5 (Assessment Procedures)](https://csrc.nist.gov/pubs/sp/800/53/a/r5/final)
- [NIST SP 800-53 Rev 5 Full Catalog](https://csrc.nist.gov/pubs/sp/800/53/r5/upd1/final)

## Checklist

- [ ] Control documented in SSP
- [ ] Implementation evidence collected
- [ ] Operating effectiveness validated
- [ ] Continuous monitoring in place
- [ ] Related controls (none) reviewed