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OWASP ZAP Passive Scan — Non‑intrusive Security Analysis

Tool: OWASP ZAP (Zed Attack Proxy) — a widely used open‑source web security testing tool

Goals:
• Analyze HTTP responses to identify potential vulnerabilities
• Validate security header configuration (HSTS, X-Frame-Options, X-Content-Type-Options, etc.)
• Detect sensitive information exposure (cookies, debug info, server banners)
• Check session management weaknesses
• Identify potential injection points
• Detect technology stack in use

Method:
Passive scan: analyzes HTTP requests/responses without active attacks
Scope: main page of the specified URL (no crawling)
Excludes: CSP warnings (covered in headers test)
Time: ~10–20 seconds
Domain verification: only verified domains can be scanned
Grade Score Criteria
A+ 90~100 0 High/Medium vulnerabilities
Complete security headers (HTTPS, HSTS, X-Frame-Options etc.)
No sensitive information exposure (cookies, comments, debug)
Minimal server/framework version disclosure
A 80–89 High 0, Medium ≤ 1
Most security headers present, minor gaps
No sensitive data exposure
Minor info exposure (e.g., server type)
B 70–79 High ≤ 1, Medium ≤ 2
Some headers missing (HSTS, X‑XSS‑Protection)
Session cookies missing Secure/HttpOnly
Minor internal identifiers in comments/meta
C 60–69 High ≥ 2 or Medium ≥ 3
Key headers absent
Sensitive parameters/tokens exposed in responses
Weak session management (cookie attributes lacking)
D 50–59 Critical ≥ 1 or High ≥ 3
Severe auth/session attribute gaps
Debug/dev info exposed (stack traces, internal IPs)
Exposed admin consoles/config files
F 0–49 Widespread High vulnerabilities
No HTTPS or effectively disabled
Sensitive data in plaintext/exposed
Lack of security headers/session controls overall
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