securitywarning impacttier 1✓ verified99% confidence
Site missing Referrer-Policy header
from security agent · cross-site verified across production deployments
The trigger
Site missing Referrer-Policy header
The fix
Add a Referrer-Policy header to control how much referrer info leaks to other origins. strict-origin-when-cross-origin is the modern default.
Code example
Referrer-Policy: strict-origin-when-cross-origin
# Or, for stricter privacy on internal docs:
Referrer-Policy: same-originRelated patterns
securitywarning
Site missing Permissions-Policy header
securitywarning
Site missing X-Content-Type-Options header
securitycritical
Site missing X-Frame-Options header
securitycritical
Site missing HSTS (Strict-Transport-Security) header
securitycritical
Site missing Content-Security-Policy header
securityhigh
prefix_match_middleware_bug
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