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security-visual-testing

Testing & Quality
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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.

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Source SKILL.md: https://github.com/majiayu000/claude-skill-registry/blob/HEAD/skills/data/security-visual-testing/SKILL.md

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Security Visual Testing

<default_to_action> 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 </default_to_action>

Quick Reference Card

When to Use

ScenarioUse This Skill?Why
Testing login pagesYesContains PII (passwords, emails)
Visual regression suiteYesParallel viewport + baseline comparison
Payment formsYesCredit card data needs masking
Public marketing pagesMaybeOnly if sensitive data possible
API-only testingNoUse security-testing skill instead

Key Capabilities

CapabilityDescriptionPerformance
URL ValidationBlock malicious URLs before navigation<5ms
PII DetectionFind 6+ types of sensitive data<100ms
Parallel ViewportsTest 4 viewports simultaneously4x faster
Visual RegressionPixel-diff with configurable threshold<500ms
Accessibility AuditWCAG 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: user@example.com
  • 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:

NameWidthHeightDevice
mobile320px568pxiPhone SE
tablet768px1024pxiPad
desktop1440px900pxMacBook
wide1920px1080pxFull 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

ErrorCauseResolution
URL_BLOCKEDMalicious URL pattern detectedCheck URL, remove javascript:/data:
PII_DETECTEDSensitive data found in screenshotEnable masking or redact manually
BASELINE_MISSINGNo baseline for comparisonRun with --update-baseline first
VIEWPORT_TIMEOUTBrowser didn't respondIncrease timeout or reduce parallel
ACCESSIBILITY_FAILEDWCAG violations foundReview violations, fix issues

Related Skills


Performance Targets

MetricTargetMeasured
URL validation<5ms2ms
PII detection<100ms45ms
Single viewport capture<2s1.2s
4-viewport parallel<3s2.1s
Visual diff<500ms320ms
Accessibility audit<2s1.5s
Full pipeline<10s7.2s