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Category: CDN Resource API Endpoint
Keywords: error found thats found1 server requested
Last fetched: 2019-02-10T20:45:31.606535+00:00
HTTP status: 5 Sub-resource URL
Clickjacking protection is enabled+2
Instructs the browser if the current website can be embedded in HTML frame by another website. Since this allows the parent website to control the framed page, this creates a potential for data theft attacks ("clickjacking") and most sensitive websites won't allow them to be framed at all (
deny) or just allow parts of them to be embedded in frames created by themselves only (
X-XSS-Protection: 1; mode=block
XSS auditor is enabled in blocking mode+1
Controls an Cross-Site Scripting (XSS) filters built into the majority of web browsers. The filter is usually turned on by default anyway, but requirement to set the header to
1 became part of canonical set of "secure" HTTP headers. Over time, vulnerabilities in the "sanitizing" mode filter were found, so
1; mode=block became the recommended value. Some companies decided that they don't really need a browser-side XSS filter to mess with their web services which are XSS-free anyway and they became consciously disabling the XSS filter by setting the header to
Announces web server software and optionally version details.Read more...
Fuzzy content type guessing is disabled+1
A non-standard but widely accepted header introduced originally by Microsoft to disable "content sniffing" or heuristic content type discovery in absence or mismatch of a proper HTTP
Content-Type declaration, which led to a number of web attacks. In general, presence of the header with its only defined value of
nosniff is considered as part of a properly secured HTTP response.
Transport Layer Security (TLS) is enabled+2
script-src 'none'; object-src 'none'; base-uri 'none'
block-all-mixed-content directive if your website is only accessible over TLS and you are certain it doesn not have any legacy plaintext resources. Otherwise you may add adding
upgrade-insecure-requests directive if your website may still have some legacy plaintext HTTP resources and you want them to be still available rather than blocked
You should definitely try using
'strict-dynamic' to eliminate those long lists of trusted third-party scripts
script-src 'report-sample' as it significantly helps debugging CSP reports. See specification