Security Report Summary
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Site: https://datuan.dev/
IP Address: 104.21.87.154
Report Time: 29 Aug 2025 08:30:17 UTC
Headers:
  • Referrer-Policy
  • X-Content-Type-Options
  • Strict-Transport-Security
  • 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
dateFri, 29 Aug 2025 08:30:17 GMT
content-typetext/html; charset=utf-8
access-control-allow-origin*
cache-controlpublic, max-age=0, must-revalidate
nel{"report_to":"cf-nel","success_fraction":0.0,"max_age":604800}
referrer-policystrict-origin-when-cross-origin
x-content-type-optionsnosniff
varyaccept-encoding
report-to{"group":"cf-nel","max_age":604800,"endpoints":[{"url":"https://a.nel.cloudflare.com/report/v4?s=%2BGhshWp40ZU%2BCLCh69fnMAxOij6iqTW1c7n%2BmIJmyDwvfJvrw8AiZmEVW%2BTgMKov%2Blj1oYkE98iw6U5sR%2BsJ00Mk1ZdkJlnV"}]}
cf-cache-statusDYNAMIC
speculation-rules"/cdn-cgi/speculation"
servercloudflare
strict-transport-securitymax-age=31536000; includeSubDomains; preload
content-encodinggzip
cf-ray976aaf80a9551b9b-DUB
alt-svch3=":443"; ma=86400
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
access-control-allow-originThis is a very lax CORS policy. Such a policy should only be used on a public CDN.
nelNetwork Error Logging is a new header that instructs the browser to send reports during various network or application errors. You can sign up for a free account on Report URI to collect these reports.
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.
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".
report-toReport-To enables the Reporting API. This allows a website to collect reports from the browser about various errors that may occur. You can sign up for a free account on Report URI to collect these reports.
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.