Evidence review
What to inspect before changing anything
Start with the delivered website and the real user journey. Record the current state so the team can distinguish an observed problem from an assumption and compare the same surface after deployment.
- 01Inspect frame-ancestors and X-Frame-Options
- 02Inventory pages that must be embedded
- 03Test authentication and confirmation pages in frames
Implementation
A practical improvement plan
Make the smallest coherent change that solves the observed problem. Keep normal code review, accessibility, security and product checks in the loop instead of optimizing for the scan alone.
- 01Use CSP frame-ancestors as the primary control
- 02Keep X-Frame-Options where legacy coverage matters
- 03Allow only documented embedding origins
Verification
How to verify the result
Verification should test the intended outcome and the most likely regression. Use the production delivery path whenever headers, caching, rendering or third-party services affect the result.
- 01Attempt embedding from allowed and untrusted origins
- 02Test partner and internal integrations
- 03Confirm sensitive routes cannot be framed
Common pitfall
A shortcut to avoid
Using conflicting legacy and CSP directives can create different behavior across browsers and integrations.
Further reading
Primary guidance and references
These sources provide standards, security guidance or the interpretation framework used to keep this guide bounded. Product-specific implementation still requires review in the actual codebase.