proffesor-for-testing

security-visual-testing

148
29
# Install this skill:
npx skills add proffesor-for-testing/agentic-qe --skill "security-visual-testing"

Install specific skill from multi-skill repository

# Description

Security-first visual testing combining URL validation, PII detection, and visual regression with parallel viewport support. Use when testing web applications that handle sensitive data, need visual regression coverage, or require WCAG accessibility compliance.

# SKILL.md


name: security-visual-testing
description: "Security-first visual testing combining URL validation, PII detection, and visual regression with parallel viewport support. Use when testing web applications that handle sensitive data, need visual regression coverage, or require WCAG accessibility compliance."
category: specialized-testing
priority: high
tokenEstimate: 1400
agents: [qe-visual-tester, qe-security-scanner, qe-accessibility-auditor]
implementation_status: stable
optimization_version: 1.0
last_optimized: 2026-01-21
dependencies: [visual-testing-advanced, security-testing, accessibility-testing]
quick_reference_card: true
tags: [security, visual-testing, pii, accessibility, wcag, parallel-viewport, regression]


Security Visual Testing


When performing security-aware visual testing:
1. VALIDATE URLs before navigation (check for malicious patterns)
2. SCAN for PII before saving screenshots (mask sensitive data)
3. CAPTURE parallel viewports (mobile, tablet, desktop)
4. COMPARE against baselines (detect visual regressions)
5. AUDIT accessibility (WCAG 2.1 AA compliance)

Quick Security-Visual Checklist:
- URL validation (no javascript:, data:, file: schemes)
- PII detection (emails, phones, SSN, credit cards, API keys)
- Visual regression (diff threshold < 0.1%)
- Viewport coverage (320px, 768px, 1024px, 1440px)
- Accessibility score (> 90% axe-core pass rate)

Critical Success Factors:
- Always mask PII before storing screenshots
- Test across all target viewports in parallel
- Store baselines in version control
- Run accessibility audits on every visual change

Quick Reference Card

When to Use

Scenario Use This Skill? Why
Testing login pages Yes Contains PII (passwords, emails)
Visual regression suite Yes Parallel viewport + baseline comparison
Payment forms Yes Credit card data needs masking
Public marketing pages Maybe Only if sensitive data possible
API-only testing No Use security-testing skill instead

Key Capabilities

Capability Description Performance
URL Validation Block malicious URLs before navigation <5ms
PII Detection Find 6+ types of sensitive data <100ms
Parallel Viewports Test 4 viewports simultaneously 4x faster
Visual Regression Pixel-diff with configurable threshold <500ms
Accessibility Audit WCAG 2.1 A/AA/AAA compliance <2s

Workflows

1. Security Visual Audit (Full Pipeline)

# Run complete security + visual audit
aqe test visual-audit --url https://example.com --security --accessibility

Steps:
1. Validate URL security (block malicious schemes)
2. Scan page for security issues (XSS, injection patterns)
3. Capture screenshots across 4 viewports in parallel
4. Compare against stored baselines
5. Run accessibility audit (axe-core)
6. Generate consolidated report

2. PII-Safe Screenshot

# Capture screenshot with automatic PII masking
aqe screenshot --url https://example.com/profile --pii-safe

PII Detection Patterns:
- Email addresses: [email protected]
- Phone numbers: +1-555-123-4567
- Credit cards: 4111-1111-1111-1111
- SSN: 123-45-6789
- API keys: sk_live_..., AKIA...
- Passwords: Form fields with type="password"

Masking Strategy:
- Default: Blur with high intensity
- Options: redact (black box), pixelate, blur

3. Responsive Visual Audit

# Test visual consistency across viewports
aqe test responsive --url https://example.com --viewports mobile,tablet,desktop

Default Viewports:
| Name | Width | Height | Device |
|------|-------|--------|--------|
| mobile | 320px | 568px | iPhone SE |
| tablet | 768px | 1024px | iPad |
| desktop | 1440px | 900px | MacBook |
| wide | 1920px | 1080px | Full HD |


Integration with AQE v3

Using with BrowserSecurityScanner

import { BrowserSecurityScanner } from '@agentic-qe/v3';

const scanner = new BrowserSecurityScanner(memory, {
  urlValidation: { enabled: true },
  piiDetection: { enabled: true, maskBeforeSave: true },
  parallelViewports: { maxConcurrent: 4 }
});

const result = await scanner.scanUrl('https://example.com', {
  viewports: ['mobile', 'tablet', 'desktop'],
  accessibility: true
});

Using with TrajectoryAdapter

import { TrajectoryAdapter } from '@agentic-qe/v3';

const adapter = new TrajectoryAdapter(memory);

// Record testing trajectory for learning
await adapter.startTrajectory('security-visual-test', {
  url: 'https://example.com',
  testType: 'security-visual'
});

// ... perform tests ...

await adapter.endTrajectory(trajectoryId, {
  success: true,
  piiFound: 3,
  visualRegressions: 0,
  accessibilityScore: 95
});

Agent Coordination

Memory Namespace

aqe/security-visual/
├── baselines/*          - Visual regression baselines
├── screenshots/*        - Captured screenshots (PII masked)
├── reports/*            - Audit reports
└── trajectories/*       - Learning trajectories

Fleet Coordination

const fleet = await FleetManager.coordinate({
  strategy: 'security-visual-audit',
  agents: [
    'qe-visual-tester',      // Visual regression
    'qe-security-scanner',   // URL/PII scanning
    'qe-accessibility-auditor' // WCAG compliance
  ],
  topology: 'parallel',
  maxConcurrent: 4
});

Error Handling

Error Cause Resolution
URL_BLOCKED Malicious URL pattern detected Check URL, remove javascript:/data:
PII_DETECTED Sensitive data found in screenshot Enable masking or redact manually
BASELINE_MISSING No baseline for comparison Run with --update-baseline first
VIEWPORT_TIMEOUT Browser didn't respond Increase timeout or reduce parallel
ACCESSIBILITY_FAILED WCAG violations found Review violations, fix issues


Performance Targets

Metric Target Measured
URL validation <5ms 2ms
PII detection <100ms 45ms
Single viewport capture <2s 1.2s
4-viewport parallel <3s 2.1s
Visual diff <500ms 320ms
Accessibility audit <2s 1.5s
Full pipeline <10s 7.2s

# Supported AI Coding Agents

This skill is compatible with the SKILL.md standard and works with all major AI coding agents:

Learn more about the SKILL.md standard and how to use these skills with your preferred AI coding agent.