Validate Last-Modified header [fail]! No valid Last-Modified HTTP header was found.INFOValidate Last-Modified headerINFOReading Last-Modified response headerFAILCheck Last-Modified header is present and parseable actual="missing" expected="valid" alternateDates=[]FAILLast-Modified header is missing or invalidValidate structured freshness dates [fail]! No Schema.org freshness dates were found.INFOValidate structured freshness datesINFOCollecting Schema.org freshness dates from JSON-LD, Microdata, and RDFaFAILCheck structured freshness date count actual=0 expected="> 0" invalidDateCount=0 formats={} alternateDates=[]FAILNo structured freshness dates foundValidate metadata freshness dates [fail]! No Open Graph, Dublin Core, or generic meta freshness date was found.INFOValidate metadata freshness datesINFOCollecting Open Graph, Dublin Core, and generic meta freshness datesFAILCheck metadata freshness date count actual=0 expected="> 0" metaDateCount=0 invalidDateCount=0 alternateDates=[]FAILNo metadata freshness dates foundCorroborate with sitemap lastmod [warning]INFOCorroborate with sitemap lastmodINFODiscovering sitemap candidates and matching the scanned page URL candidateCount=1 attempts=6WARNCheck matching sitemap lastmod actual="no match" expected="valid match when available" robotsStatusCode=200WARNNo matching sitemap lastmod found after sitemap attempts attempts=6

Find enforcing CSP delivery [fail]! Applicable HTML response is missing an enforcing Content-Security-Policy header.INFOFind enforcing CSP deliveryINFORead CSP delivery headers enforcingHeader="missing" reportOnlyHeader="missing" metaPolicyCount=0 legacyHeadersPresent=[]FAILRequire enforcing Content-Security-Policy header actual="missing" expected="present" issue="Applicable HTML response is missing an enforcing Content-Security-Policy header."FAILApplicable HTML response is missing an enforcing Content-Security-Policy header.

Validate CSP frame-ancestors [warning]! No enforcing CSP frame-ancestors directive is present.INFOValidate CSP frame-ancestorsINFORead CSP frame-ancestors signals enforcingHeaderPresent=false reportOnlyHeaderPresent=false metaFrameAncestors=false policyCount=0 duplicateDirectives=[]WARNCompare effective frame-ancestors directive actual="missing" expected="valid restrictive enforcing frame-ancestors" issue="No enforcing CSP frame-ancestors directive is present."WARNNo enforcing CSP frame-ancestors directive is present.Validate X-Frame-Options [fail]! No valid X-Frame-Options fallback is present.INFOValidate X-Frame-OptionsINFORead X-Frame-Options fallback value="missing" parsedValues=[] normalizedValues=[]FAILCompare X-Frame-Options value actual="missing" expected="DENY or SAMEORIGIN" valid=false obsoleteAllowFrom=false duplicateOrConflicting=false issue="No valid X-Frame-Options fallback is present."FAILNo valid X-Frame-Options fallback is present.Review observed browser responses [warning]! One or more same-origin HTML documents observed by Chrome did not emit valid frame protection.INFOReview observed browser responsesINFOSample Chrome-observed same-origin responses observedResponseCount=20 sameOriginCount=19 htmlDocumentCount=1WARNCompare observed HTML frame protection actual={"missingOrInvalidFrameProtectionCount":1,"broadFrameAncestorsCount":0,"affected":[{"url":"https://surebooks.net/","status":200,"resourceType":"document","contentType":"text/html; charset=UTF-8","contentSecurityPolicy":null,"contentSecurityPolicyReportOnly":null}]} expected="0 missing/invalid or broad same-origin HTML responses" issue="One or more same-origin HTML documents observed by Chrome did not emit valid frame protection."WARNOne or more same-origin HTML documents observed by Chrome did not emit valid frame protection.