# CP-4(5)_self-challenge

> Employ [organization-defined] to [organization-defined] to disrupt and adversely affect the system or system component.

- Skill: `cyberstrikeus/cp-4-5-self-challenge` (Agent Skill)
- Install (CLI): `npx skillmds@latest add cyberstrikeus/cp-4-5-self-challenge`
- Raw SKILL.md: https://api.skillmd.com/api/skills/cyberstrikeus/cp-4-5-self-challenge/raw
- Safety review: PASS (external: skill-scanner PASS, skillspector PASS)
- Works with: Claude Code, Claude.ai, OpenAI Codex
- Category: Web & Frontend
- Author: cyberstrikeus (https://skillmd.com/u/cyberstrikeus)
- Updated: 2026-09-17
- Page: https://skillmd.com/skills/cyberstrikeus/cp-4-5-self-challenge

---


# CP-4(5) Self-challenge

> **Enhancement of:** CP-4

## High-Level Description

**Family:** Contingency Planning (CP)
**Framework:** NIST SP 800-53 Rev 5

Often, the best method of assessing system resilience is to disrupt the system in some manner. The mechanisms used by the organization could disrupt system functions or system services in many ways, including terminating or disabling critical system components, changing the configuration of system components, degrading critical functionality (e.g., restricting network bandwidth), or altering privileges. Automated, on-going, and simulated cyber-attacks and service disruptions can reveal unexpected functional dependencies and help the organization determine its ability to ensure resilience in the face of an actual cyber-attack.

## What to Check

- [ ] Verify CP-4(5) Self-challenge is documented in SSP
- [ ] Confirm control is operating effectively
- [ ] Review evidence of continuous monitoring for CP-4(5)
- [ ] Verify enhancement builds upon base control CP-4

## How to Test

### Step 1: Review Documentation

Examine the System Security Plan (SSP) and related artifacts for CP-4(5) 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

Employ [organization-defined] to [organization-defined] to disrupt and adversely affect the system or system component.

### Implementation Guidance

Often, the best method of assessing system resilience is to disrupt the system in some manner. The mechanisms used by the organization could disrupt system functions or system services in many ways, including terminating or disabling critical system components, changing the configuration of system components, degrading critical functionality (e.g., restricting network bandwidth), or altering privileges. Automated, on-going, and simulated cyber-attacks and service disruptions can reveal unexpected functional dependencies and help the organization determine its ability to ensure resilience in the face of an actual cyber-attack.

## Risk Assessment

| Finding                                | Severity | Impact                          |
| -------------------------------------- | -------- | ------------------------------- |
| CP-4(5) Self-challenge not implemented | Medium   | Contingency Planning            |
| CP-4(5) partially implemented          | Low      | Incomplete Contingency Planning |

## CWE Categories

| CWE ID | Title                 |
| ------ | --------------------- |
| N/A    | No direct CWE mapping |

## References

- [NIST SP 800-53 Rev 5 - CP-4(5)](https://csrc.nist.gov/projects/cprt/catalog#/cprt/framework/version/SP_800_53_5_1_1/home?element=cp-4.5)
- [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