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Anthropic-Cybersecurity-Skills/skills/performing-clickjacking-attack-test/references/api-reference.md
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API Reference: Performing Clickjacking Attack Test

HTTP Security Headers

Header Values Description
X-Frame-Options DENY, SAMEORIGIN, ALLOW-FROM uri Legacy frame embedding control
Content-Security-Policy: frame-ancestors 'none', 'self', URLs Modern CSP-based frame control

requests Library

Method Description
requests.get(url, allow_redirects=True) Fetch page and follow redirects
response.headers.get("X-Frame-Options") Extract frame protection header
response.headers.get("Content-Security-Policy") Extract CSP header

PoC HTML Elements

Element Purpose
<iframe src="target" style="opacity:0"> Invisible target frame overlay
<div class="decoy"> Visible decoy content beneath frame
sandbox attribute Bypass JS frame-busting on iframe

JavaScript Frame-Busting Patterns

Pattern Description
top.location !== self.location Check if page is framed
window.top !== window.self Alternative frame detection
parent.frames.length > 0 Check for parent frames

Key Libraries

  • requests (pip install requests): HTTP client for header analysis
  • selenium (optional): Browser-based testing for JS frame-busting validation
  • beautifulsoup4 (optional): Parse HTML for embedded frame-busting scripts

Configuration

Variable Description
Target URL Authorized target application URL
Endpoint paths Application paths to test (login, settings, admin)

OWASP Testing Guide

Test ID Description
WSTG-CLNT-09 Testing for Clickjacking

References