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Last fetched: 2019-04-15T10:42:14.358921+00:00
HTTP status: 5 Sub-resource URL
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.
Fuzzy content type guessing is disabled+1
X-XSS-Protection: 1; mode=block
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
XSS auditor is enabled in blocking mode+1
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 (
Clickjacking protection is enabled+2
The Referrer-Policy HTTP header governs which referrer information, sent in the Referer header, should be included with requests made.Read more...
Strict-Transport-Security: max-age=31536000; includeSubDomains
HTTP Strict Transport Security (HSTS) is an opt-in security enhancement that is specified by a web application through the use of a special response header.Read more...
HTTP Strict Transport Security is enabled+2
Transport Layer Security (TLS) is enabled+2
script-src 'self' 'unsafe-eval' www.google-analytics.com ajax.googleapis.com www.google.com google.com gstatic.com www.gstatic.com;
base-uri allows attackers to inject
base tags which override the base URI to an attacker-controlled origin. Set to
'none' unless you need to handle tricky relative URLs scheme
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
Policy that has
script-src but not
default-src: 'none' allows script execution by injecting plugin resources. Please read our CSP guidance for more details for more details
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
script-src 'unsafe-eval' allows bypassing of CSP and execution of inlined untrusted scripts. Use
script-src www.google-analytics.com is known to host JSONP which can be used to bypass CSP and execute untrusted scripts
script-src ajax.googleapis.com is known to host JSONP which can be used to bypass CSP and execute untrusted scripts
script-src www.google.com is known to host JSONP which can be used to bypass CSP and execute untrusted scripts
script-src www.gstatic.com is known to host JSONP which can be used to bypass CSP and execute untrusted scripts
Want second opinion? Try Google CSP Evaluator.