Checks

Timing-Allow-Origin is a wildcard

Timing-Allow-Origin is *, so any site can read detailed timing for this response.

Why it matters

Resource timing can reveal whether a user is logged in or how long a private request took.

What to do

Set Timing-Allow-Origin to specific origins, or omit the header.

Reference

Security response headers reduce XSS, clickjacking, and protocol downgrade risk.

OWASP Secure Headers Project