All-in-one free web application security tool. Web application vulnerability and privacy scanner with support for HTTP cookies, Flash, HTML5 localStorage, sessionStorage, CANVAS, Supercookies, Evercookies. Includes a free SSL/TLS, HTML and HTTP vulnerability scanner and URL malware scanner.
1x1 transparent GIF is frequently used as user tracking mechanism
Category: Search Engine Clean Browsing
Keywords: data play learn share store using google policy search account collect content example privacy service started personal services including information
Last fetched: 2020-02-14T09:19:45.640493+00:00
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Advanced user tracking and fingerprinting techniques are used by websites to bypass privacy protection in web browsers and increase tracking persistence.
b'GIF8' … b'\x01\x00\x01\x00'
P3P: policyref="https://www.googleadservices.com/pagead/p3p.xml", CP="NOI DEV PSA PSD IVA IVD OTP OUR OTR IND OTC"
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
Announces web server software and optionally version details.Read more...
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 disabled0
Transport Layer Security (TLS) is enabled+2
X-Frame-Options header is missing
script-src 'none'; object-src 'none'
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
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
Want second opinion? Try Google CSP Evaluator.