Security Report Summary
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Site: https://pmc.ncbi.nlm.nih.gov/
IP Address: 34.107.134.59
Report Time: 08 Jul 2026 14:31:00 UTC
Headers:
  • Strict-Transport-Security
  • X-Frame-Options
  • X-Content-Type-Options
  • Referrer-Policy
  • Content-Security-Policy
  • Permissions-Policy
Advanced:
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Missing Headers
Content-Security-PolicyContent Security Policy is an effective measure to protect your site from XSS attacks. By whitelisting sources of approved content, you can prevent the browser from loading malicious assets.
Permissions-PolicyPermissions Policy is a new header that allows a site to control which features and APIs can be used in the browser.
Warnings
X-Content-Type-OptionsThere was a duplicate X-Content-Type-Options header.
Raw Headers
HTTP/2200
dateWed, 08 Jul 2026 14:31:00 GMT
serveristio-envoy
strict-transport-securitymax-age=31536000; includeSubDomains; preload
content-typetext/html; charset=utf-8
varyAccept-Encoding
x-frame-optionsDENY
x-content-type-optionsnosniff
x-content-type-optionsnosniff
referrer-policysame-origin
cross-origin-opener-policysame-origin
content-encodinggzip
x-envoy-upstream-service-time133
set-cookiencbi_sid=4A90261AA4E5EB33_1902SID; Domain=.nih.gov; expires=Thu, 08 Jul 2027 14:31:00 GMT; Max-Age=31536000; Path=/
x-ua-compatibleIE=Edge
x-xss-protection1; mode=block
via1.1 google
alt-svcclear
Upcoming Headers
Cross-Origin-Embedder-PolicyCross-Origin Embedder Policy allows a site to prevent assets being loaded that do not grant permission to load them via CORS or CORP.
Cross-Origin-Resource-PolicyCross-Origin Resource Policy allows a resource owner to specify who can load the resource.
Additional Information
serverServer value has been changed. Typically you will see values like "Microsoft-IIS/8.0" or "nginx 1.7.2".
strict-transport-securityHTTP Strict Transport Security is an excellent feature to support on your site and strengthens your implementation of TLS by getting the User Agent to enforce the use of HTTPS.
x-frame-optionsX-Frame-Options tells the browser whether you want to allow your site to be framed or not. By preventing a browser from framing your site you can defend against attacks like clickjacking.
x-content-type-optionsX-Content-Type-Options stops a browser from trying to MIME-sniff the content type and forces it to stick with the declared content-type. The only valid value for this header is "X-Content-Type-Options: nosniff".
x-content-type-optionsX-Content-Type-Options stops a browser from trying to MIME-sniff the content type and forces it to stick with the declared content-type. The only valid value for this header is "X-Content-Type-Options: nosniff".
referrer-policyReferrer Policy is a new header that allows a site to control how much information the browser includes with navigations away from a document and should be set by all sites.
cross-origin-opener-policyCross-Origin Opener Policy allows a site to opt-in to Cross-Origin Isolation in the browser.
x-xss-protectionX-XSS-Protection sets the configuration for the XSS Auditor built into older browsers. The recommended value was "X-XSS-Protection: 1; mode=block" but you should now look at Content Security Policy instead.