Security Report Summary
C
Site: https://allegro.cz/
IP Address: 185.31.27.186
Report Time: 28 Oct 2026 15:43:29 UTC
Headers:
  • X-Frame-Options
  • X-Content-Type-Options
  • Strict-Transport-Security
  • Content-Security-Policy
  • Referrer-Policy
  • 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.
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.
Permissions-PolicyPermissions Policy is a new header that allows a site to control which features and APIs can be used in the browser.
Warnings
Status code indicates errorThe status code of the response indicates an error. Not all headers may be set when the response is an error.
Scan was blockedWe got a 403 when trying to scan, please ensure we aren't being blocked. You can find our IP addresses to allow scans in our FAQ.
Raw Headers
HTTP/2403
content-typetext/html
content-length811
x-frame-optionsSAMEORIGIN
x-content-type-optionsnosniff
strict-transport-securitymax-age=15552000
set-cookie_cmuid=bd7926a9-5a01-4fc8-af1a-4bfb3c26b2e5; Expires=Thu, 02 Dec 2027 15:43:29 GMT; Path=/; Domain=.allegro.cz; Secure
set-cookie_cmuid=bd7926a9-5a01-4fc8-af1a-4bfb3c26b2e5; Expires=Thu, 02 Dec 2027 15:43:29 GMT; Path=/; Domain=.allegro.cz; Secure
charsetutf-8
access-control-expose-headersx-dd-b, x-set-cookie
set-cookiedatadome=DzxIAig7JaSZEvuENZiCkh475wxLfZP3ZfCTg8fdpL0iaZVuBKEjBtCfAZJgHw6M31NjLZYoNrJNunqCujGP_F_L2ZZDxQ0E1MWES0zqgZJ~TauEHErrN~G3P4YOn6dX; Max-Age=31536000; Domain=.allegro.cz; Path=/; Secure; SameSite=Lax
set-cookiewdctx=v5.O6Ymvdum5jrVUhkHN3jt4GI6xNXc4PIqXaqpa1IHUT_irVw2F_5mreBe5jd_HqY-T8qttxUTpFZB5D-SBxTtHGcvsJOuNZNC-UNZ9fU2xWYOkyT_TDtGb9PS_FJkryE7w_Pj9X7D5hHQPdUH-svQBlVLV8Th4Q636kcDYFbiLuv2LMhM3qCChrcXjYA--37nXn8RTIykKzfUqVYWHUMvxVARhNowDKS5JHg431LhaTzW.ngW7l_BMRdSi1wiaDCtiAw.fd1cJ31pyTg; Max-Age=2592000; Domain=.allegro.cz; Path=/; Secure
accept-chSec-CH-UA,Sec-CH-UA-Mobile,Sec-CH-UA-Platform,Sec-CH-UA-Arch,Sec-CH-UA-Full-Version-List,Sec-CH-UA-Model,Sec-CH-Device-Memory,Sec-CH-UA-Platform-Version
access-control-allow-originhttps://securityheaders.com
x-dd-b2
content-typetext/html;charset=utf-8
cache-controlmax-age=0, private, no-cache, no-store, must-revalidate
pragmano-cache
access-control-allow-credentialstrue
x-datadome-cidAHrlqAAAAAMAegt7l_802_sAIv5toA==
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
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".
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.
access-control-allow-originThe Access-Control-Allow-Origin header is used to configure CORS.