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[Security] Implement Strict Content Security Policy (CSP) #124

Description

@piyushsinghgaur1

Description:

To enhance frontend security, implement a strong Content Security Policy (CSP) in the Angular frontend.

This protects the app against XSS, clickjacking, and code injection attacks by restricting trusted sources.


Tasks:

  • Define a strict CSP policy (e.g., 'default-src': ["'self'"])
  • Avoid 'unsafe-inline' unless absolutely required (and document it if used)
  • Remove <meta http-equiv="Content-Security-Policy"> from client app
  • Add whitelisted external domains (e.g., fonts, analytics, CDNs, etc.)
  • Ensure CSP configuration is environment-agnostic (dev/prod/stage)
  • Test application with CSP enabled in all environments
  • Validate via browser console: no CSP violations
  • Document the CSP configuration and update steps in the project README

Acceptance Criteria:

  • Application loads successfully with no CSP violations in browser console
  • All third-party resources are explicitly whitelisted in the CSP
  • Inline scripts and styles are avoided where possible
  • CSP policy is clearly documented and easy to update

Activity

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