Security Report Summary
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Site: https://davidgaughran.com/best-promo-sites-books/
IP Address: 151.101.2.159
Report Time: 16 Aug 2026 03:50:32 UTC
Headers:
  • Referrer-Policy
  • Strict-Transport-Security
  • X-Content-Type-Options
  • Content-Security-Policy
  • X-Frame-Options
  • Permissions-Policy
Advanced:
Not bad… Maybe you should perform a deeper security analysis of your website and APIs:
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.
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. Recommended value "X-Frame-Options: SAMEORIGIN".
Permissions-PolicyPermissions Policy is a new header that allows a site to control which features and APIs can be used in the browser.
Raw Headers
HTTP/2200
x-fw-serverFlywheel/5.1.0
referrer-policyno-referrer-when-downgrade
accept-chSec-CH-UA-Mobile
x-fw-version5.0.0
x-nitro-cacheHIT
link<https://cdn-cppjl.nitrocdn.com>; rel=preconnect
link<https://davidgaughran.com/wp-json/>; rel="https://api.w.org/"
link<https://davidgaughran.com/wp-json/wp/v2/posts/8885>; rel="alternate"; title="JSON"; type="application/json"
link<https://davidgaughran.com/?p=8885>; rel=shortlink
x-nitro-revf9a39bb
x-fw-dynamicTRUE
strict-transport-securitymax-age=10886400
x-fw-hashrngboccvp8
x-cache-ctime1786429807
cache-controlno-cache
x-nitro-cache-fromdrop-in
x-xss-protection1
content-encodinggzip
x-content-type-optionsnosniff
content-typetext/html; charset=UTF-8
serverFlywheel/5.1.0
x-cacheableYES
fastly-restarts1
accept-rangesbytes
dateSun, 16 Aug 2026 03:50:32 GMT
x-served-bycache-dub4327-DUB, cache-dub4388-DUB
x-cacheMISS, MISS
x-cache-hits0, 0
x-timerS1786852232.696065,VS0,VE645
varyAccept-Encoding, sec-ch-ua-mobile, user-agent
x-fw-serveTRUE
x-fw-staticNO
x-fw-typeVISIT
content-length64436
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-Opener-PolicyCross-Origin Opener Policy allows a site to opt-in to Cross-Origin Isolation in the browser.
Cross-Origin-Resource-PolicyCross-Origin Resource Policy allows a resource owner to specify who can load the resource.
Additional Information
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.
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-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.
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".
serverServer value has been changed. Typically you will see values like "Microsoft-IIS/8.0" or "nginx 1.7.2".