https://ads.yahoo.com/cms/v1?esig=1~b04e41039133c73fafd60e0ed8cb49a70ecfb061&nwid=10000483131&sigv=1

Category: Advertising & Tracking

Keywords: server connect description:


Last fetched: 2019-10-07T02:11:15.176672+00:00

HTTP status: 5 Sub-resource URL


TLS/SSL configuration report

TLS score
F
Grade capped at F
Certificate path cannot be verified to a known root certificate

See full SSL/TLS security report for ads.yahoo.com

Security-related HTTP headers

  • 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 0.

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  • X-Content-Type-Options: nosniff

    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.

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  • Expect-CT: max-age=31536000, report-uri="http://csp.yahoo.com/beacon/csp?src=yahoocom-expect-ct-report-only"

    The Expect-CT header allows sites to opt in to reporting and/or enforcement of Certificate Transparency requirements, which prevents the use of misissued certificates for that site from going unnoticed. When a site enables the Expect-CT header, they are requesting that the browser check that any certificate for that site appears in public CT logs.

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  • Server: ATS

    Announces web server software and optionally version details.

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  • Strict-Transport-Security: max-age=31536000

    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.

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  • Location: https://googleads.g.doubleclick.net/xbbe/match?xid=E0

    The HTTP Location header is being returned by a server to redirect the web browser to a new URL of the requested resource. The URL may be relative (/index.html) or absolute (https://example.com).

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  • P3P: policyref="https://policies.yahoo.com/w3c/p3p.xml", CP="CAO DSP COR CUR ADM DEV TAI PSA PSD IVAi IVDi CONi TELo OTPi OUR DELi SAMi OTRi UNRi PUBi IND PHY ONL UNI PUR FIN COM NAV INT DEM CNT STA POL HEA PRE LOC GOV"

    Largely abandoned format for declaring website's privacy policy in machine-readable format. The only reason for many websites to use the header was that old versions of Microsoft Internet Explorer disallowed third-party cookies on websites missing P3P.

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