Security & Privacy 100% Local Processing

HTTP Set-Cookie Header & Security Flag Auditor

Paste an HTTP `Set-Cookie` header to audit critical cybersecurity attributes: `Secure`, `HttpOnly`, `SameSite` (Strict/Lax/None), expiration dates, and domain scope.

Sponsor Space

1. Set-Cookie Header Input

2. Security Posture Audit

Overall Cookie Security Grade
Grade A+
Sponsor Space

How to Use the HTTP Set-Cookie Header & Security Flag Auditor

  1. 1
    Paste an HTTP response `Set-Cookie` header (from Chrome DevTools or server code).
  2. 2
    The tool evaluates each security flag against OWASP session management guidelines.
  3. 3
    Inspect warning flags (e.g. Missing `HttpOnly` exposes session to XSS theft, Missing `Secure` allows cleartext transmission).

Practical Example & Use Case

Common Real-World Scenario

Auditing authentication session cookies to ensure cookies cannot be accessed via JavaScript (`document.cookie`) or CSRF exploits.

Technical Notes & Limitations

Browser Engine Architecture

Tests for all modern IETF cookie attributes including `__Host-` and `__Secure-` prefixes.

Frequently Asked Questions

What does the HttpOnly flag protect against?

HttpOnly blocks client-side scripts from reading the cookie value, preventing session theft through Cross-Site Scripting (XSS) attacks.

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