SEC-001: Advanced Security Headers and CSP

[raviyelisetty]

Description:

Implement comprehensive security headers and Content Security Policy for enhanced protection.

Security Headers:

Essential Headers

• Strict-Transport-Security for HTTPS enforcement
• X-Content-Type-Options: nosniff to prevent MIME sniffing
• X-Frame-Options: DENY to prevent clickjacking
• X-XSS-Protection: 1; mode=block for XSS protection
• Referrer-Policy: strict-origin-when-cross-origin

Content Security Policy

http
Content-Security-Policy: 
  default-src 'self';
  script-src 'self' 'unsafe-inline' 'unsafe-eval';
  style-src 'self' 'unsafe-inline';
  img-src 'self' data: https:;
  font-src 'self';
  connect-src 'self';
  media-src 'self';
  object-src 'none';
  frame-src 'none';
  worker-src 'self';
  frame-ancestors 'none';
  form-action 'self';
  upgrade-insecure-requests;

Implementation Features

• Environment-specific CSP configurations
• CSP violation reporting and monitoring
• Gradual CSP rollout with report-only mode
• Dynamic CSP for user-generated content

Acceptance Criteria:

• All security headers implemented
• CSP policy enforced without breaking functionality
• CSP violation monitoring and alerting
• Security header testing in CI/CD
• Documentation for security policy updates
• Regular security header audits

Estimated Effort: 8-12 hours