Evidence Generation

Evidence Structure

Per-Control Evidence

## Control: A.8.5 — Secure Authentication

### Implementation Status: Partially Implemented
### Maturity Level: 3/5 (Defined)

### Evidence of Implementation

The application implements authentication using [framework/library] with the
following security measures observed:

**Password Storage** (A.8.5.a):
- Passwords are hashed using Argon2id with cost parameters [memory=65536, time=3, parallelism=4]
- Evidence: `src/auth/password.ts` lines 15-28
- Assessment: Meets OWASP recommendations for password storage

**Session Management** (A.8.5.b):
- Session tokens generated using cryptographically secure random bytes (32 bytes)
- Tokens stored with HttpOnly, Secure, and SameSite=Strict flags
- Evidence: `src/auth/session.ts` lines 10-35
- Assessment: Meets secure session management requirements

### Identified Gaps

1. **Rate Limiting**: No rate limiting observed on the login endpoint
   (`src/routes/auth.ts:45`). This creates risk of brute-force attacks.

2. **MFA**: No multi-factor authentication implementation found.

### Recommendations

1. Implement rate limiting on authentication endpoints (priority: high)
2. Add multi-factor authentication support (priority: medium)

### Assessment Metadata
- **Assessed by**: Shinsa Compliance Plugin v1.0.0
- **Date**: [ISO-8601 timestamp]
- **Confidence**: 0.85
- **Scope**: [repository path]

Narrative Style Guide

Tone

• Write in third person, past tense
• Be factual and objective — state what was observed, not opinions
• Use "was observed", "was found", "evidence indicates" language
• Avoid absolute certainty — use "appears to", "evidence suggests" for partial findings

Structure

• Lead with the strongest evidence (positive or negative)
• Group evidence by sub-requirement
• Always include the specific file and line number
• Include brief code context (what the code does, not the raw snippet)

Severity Language

• Critical: "Immediately exploitable", "Requires urgent remediation"
• High: "Significant gap", "Material weakness in control implementation"
• Medium: "Partial implementation", "Additional measures recommended"
• Low: "Minor improvement opportunity", "Enhancement recommended"
• Info: "Best practice consideration", "No compliance impact"

Evidence Quality Checklist

Before finalizing evidence, verify:

• Every finding references a specific file and line number
• The control requirement is clearly stated
• Implementation status is justified with evidence
• Maturity score is explained with specific observations
• Gaps are clearly identified with remediation steps
• Assessment date and scope are recorded
• Confidence level reflects thoroughness of assessment
• No subjective language or unsupported claims