# BeaverCheck Audit Report — https://oreilly.com **Date:** April 21, 2026 **URL:** https://oreilly.com **Overall Grade:** C (70/100) **Report:** https://beavercheck.com/results/058e92e1-8a85-407c-b1d3-e091ed823e1d ## Top Findings 1. **[CRITICAL]** Content-Security-Policy header is missing — Security > Security Headers 2. **[CRITICAL]** HSTS header is missing — Security > Security Headers 3. **[CRITICAL]** No Content-Security-Policy header found — Security > Content Security Policy 4. **[CRITICAL]** Page weighs 18.8 MB (5.2 MB transferred) — Performance > Page Weight Budget 5. **[CRITICAL]** 1 control(s) without accessible label — Accessibility > Form Accessibility --- ## Lighthouse Scores | Category | Score | |----------|-------| | Performance | 35 | | Accessibility | 87 | | Best Practices | 81 | | SEO | 92 | --- ## Security ### Security Headers (F — 10/100) *2 of 10 headers properly configured* - **[CRITICAL]** HSTS header is missing — Strict-Transport-Security forces browsers to use HTTPS, preventing downgrade attacks. Add the header with a max-age of at least 1 year. - **[WARNING]** X-Content-Type-Options header is missing — This header prevents MIME-type sniffing, which can lead to XSS attacks. Set it to 'nosniff'. - **[WARNING]** X-Frame-Options header is missing — This header prevents clickjacking by controlling who can embed your page in a frame. Set it to DENY or SAMEORIGIN. - **[WARNING]** Referrer-Policy header is missing — Controls how much referrer information is sent with requests. Set to 'strict-origin-when-cross-origin' or stricter. - **[WARNING]** Permissions-Policy header is missing — Controls which browser features (camera, microphone, geolocation) are allowed. Set it to restrict unused features. - **[CRITICAL]** Content-Security-Policy header is missing — CSP is the most important header for preventing XSS attacks. See the CSP section for detailed analysis. - **[WARNING]** Cross-Origin-Opener-Policy header is missing — COOP isolates your browsing context, preventing cross-origin side-channel attacks. Set to 'same-origin'. - **[WARNING]** Cross-Origin-Embedder-Policy header is missing — COEP prevents loading cross-origin resources without explicit permission. Required for SharedArrayBuffer and high-resolution timers. - **[PASS]** X-Powered-By header is not present - **[PASS]** Server header is present without version info ### Content Security Policy (F — 0/100) *No enforcing CSP policy found* - **[CRITICAL]** No Content-Security-Policy header found — CSP is the most effective defense against XSS attacks. Add a Content-Security-Policy header to restrict resource loading. ### TLS & Certificates (A+ — 100/100) *TLS 1.3, 7 checks passed* - **[PASS]** TLS 1.3 is used - **[PASS]** Strong cipher suite is used - **[INFO]** HTTP/2 is not negotiated — HTTP/2 provides multiplexing and header compression for better performance. - **[PASS]** Certificate is valid (expires in 88 days) - **[PASS]** Certificate chain has 2 certificates - **[PASS]** Certificate uses modern signature algorithm - **[PASS]** Certificate covers 85 domain(s) - **[PASS]** Certificate is issued by a trusted CA ### Cookie Security (A+ — 100/100) *No cookies set — no cookie security risks* - **[PASS]** No cookies set — no cookie security risks --- ## Advanced Security ### Subresource Integrity (F — 20/100) *0 of 10 external resources have SRI* - **[WARNING]** External link from cdn.oreillystatic.com lacks integrity attribute — Without SRI, if this CDN is compromised, attackers could inject malicious code. - **[WARNING]** External link from cdn.oreillystatic.com lacks integrity attribute — Without SRI, if this CDN is compromised, attackers could inject malicious code. - **[WARNING]** External script from www.googletagmanager.com lacks integrity attribute — Without SRI, if this CDN is compromised, attackers could inject malicious code. - **[WARNING]** External script from cdn.cookielaw.org lacks integrity attribute — Without SRI, if this CDN is compromised, attackers could inject malicious code. - **[WARNING]** External script from www.googletagmanager.com lacks integrity attribute — Without SRI, if this CDN is compromised, attackers could inject malicious code. - **[WARNING]** External link from cdn.oreillystatic.com lacks integrity attribute — Without SRI, if this CDN is compromised, attackers could inject malicious code. - **[WARNING]** External script from cdn.oreillystatic.com lacks integrity attribute — Without SRI, if this CDN is compromised, attackers could inject malicious code. - **[WARNING]** External script from cdnapisec.kaltura.com lacks integrity attribute — Without SRI, if this CDN is compromised, attackers could inject malicious code. - **[WARNING]** External script from cdn.oreillystatic.com lacks integrity attribute — Without SRI, if this CDN is compromised, attackers could inject malicious code. - **[WARNING]** External script from cdn.oreillystatic.com lacks integrity attribute — Without SRI, if this CDN is compromised, attackers could inject malicious code. ### JS Library Vulnerabilities (A+ — 100/100) *No known vulnerabilities* - **[PASS]** No known JavaScript library vulnerabilities detected ### Information Leakage (A+ — 100/100) *No exposures* - **[INFO]** No security.txt found — Consider adding a security.txt at /.well-known/security.txt. - **[PASS]** No sensitive files exposed ### Email Security (A — 85/100) *DMARC: quarantine* - **[PASS]** DMARC policy is quarantine — good protection ### Permissions-Policy (D — 40/100) *No header set* - **[WARNING]** No Permissions-Policy header — Consider adding a Permissions-Policy header to restrict browser feature access from embedded content. ### CORS Configuration (B — 80/100) *No CORS headers* - **[PASS]** No CORS headers present — secure default --- ## Performance ### Page Weight Budget (F — 0/100) *5.2 MB transferred, 118 requests* - **[CRITICAL]** Page weighs 18.8 MB (5.2 MB transferred) - **[WARNING]** JavaScript is 2.4 MB — consider code splitting or lazy loading — Large JavaScript bundles delay interactivity. Split code by route or defer non-critical scripts. - **[WARNING]** Images are 2.3 MB — compress or use modern formats — Convert images to WebP/AVIF and resize to display dimensions to reduce transfer size. - **[WARNING]** 118 HTTP requests — consider bundling or reducing — Each request adds latency. Bundle small files, use sprites, or eliminate unnecessary requests. - **[INFO]** Estimated 1.1 g CO2 per page load ### Third-Party Impact (D — 50/100) *100% third-party, 0 ms blocking* - **[WARNING]** Third-party code accounts for 100% of page weight (5.2 MiB of 5.2 MiB) - **[PASS]** Third-party blocking time is low (0 ms) ### Text Compression (A+ — 100/100) *All text resources are compressed* - **[PASS]** All text resources are compressed ### Image Optimization (C — 60/100) *54 images, 0 KB saveable* - **[WARNING]** https://cdn.oreillystatic.com/oreilly/logos/logo_a... is missing width/height — may cause layout shift — Set explicit width and height to prevent CLS. - **[WARNING]** https://cdn.oreillystatic.com/oreilly/logos/logo_b... is missing width/height — may cause layout shift — Set explicit width and height to prevent CLS. - **[WARNING]** https://cdn.oreillystatic.com/oreilly/images/logo_... is missing width/height — may cause layout shift — Set explicit width and height to prevent CLS. - **[WARNING]** https://cdn.oreillystatic.com/oreilly/images/googl... is missing width/height — may cause layout shift — Set explicit width and height to prevent CLS. - **[WARNING]** https://cdn.oreillystatic.com/oreilly/images/logo_... is missing width/height — may cause layout shift — Set explicit width and height to prevent CLS. - **[WARNING]** https://cdn.oreillystatic.com/oreilly/logos/logo_t... is missing width/height — may cause layout shift — Set explicit width and height to prevent CLS. - **[WARNING]** https://cdn.oreillystatic.com/oreilly/images/roku-... is missing width/height — may cause layout shift — Set explicit width and height to prevent CLS. - **[WARNING]** https://cdn.oreillystatic.com/images/sitewide-head... is missing width/height — may cause layout shift — Set explicit width and height to prevent CLS. - **[WARNING]** https://cdn.oreillystatic.com/oreilly/images/app-s... is missing width/height — may cause layout shift — Set explicit width and height to prevent CLS. - **[WARNING]** https://cdn.oreillystatic.com/oreilly/images/amazo... is missing width/height — may cause layout shift — Set explicit width and height to prevent CLS. - **[WARNING]** https://cdn.oreillystatic.com/oreilly/images/logo_... is missing width/height — may cause layout shift — Set explicit width and height to prevent CLS. - **[WARNING]** https://cdn.oreillystatic.com/oreilly/images/logo_... is missing width/height — may cause layout shift — Set explicit width and height to prevent CLS. ### JS Execution Cost (F — 20/100) *17393ms total JS execution* - **[WARNING]** https://www.oreilly.com/: 8803ms CPU time - **[WARNING]** https://cdnapisec.kaltura.com/html5/html5lib/v2.86...: 3137ms CPU time - **[WARNING]** Unattributable: 1299ms CPU time - **[WARNING]** https://cdnapisec.kaltura.com/html5/html5lib/v2.86...: 920ms CPU time - **[WARNING]** https://www.oreilly.com/KxXuCyduA3/oq/qtiMwY_O/X0r...: 777ms CPU time - **[WARNING]** Third-party scripts: 17393ms (100% of total) ### Font Loading (A+ — 100/100) *7 fonts (170 KB)* - **[INFO]** 7 font(s) use font-display: swap (FOUT risk but functional) ### JS Bundles (F — 20/100) *26 scripts, 2.2 MB unused* - **[WARNING]** https://cdnapisec.kaltura.com/html5/html5lib/v2.86...: 479 KB unused (70%) — Consider code splitting or tree shaking to reduce unused code. - **[WARNING]** https://cdnapisec.kaltura.com/html5/html5lib/v2.86...: 479 KB unused (70%) — Consider code splitting or tree shaking to reduce unused code. - **[WARNING]** https://cdnapisec.kaltura.com/html5/html5lib/v2.86...: 479 KB unused (70%) — Consider code splitting or tree shaking to reduce unused code. - **[WARNING]** https://cdnapisec.kaltura.com/html5/html5lib/v2.86...: 479 KB unused (70%) — Consider code splitting or tree shaking to reduce unused code. - **[WARNING]** https://www.googletagmanager.com/gtag/js?id=G-092E...: 77 KB unused (45%) — Consider code splitting or tree shaking to reduce unused code. - **[INFO]** Total unused JavaScript: 2.2 MB ### Resource Caching (A+ — 100/100) *All resources properly cached* - **[PASS]** No caching issues found ### Critical Rendering Path (A+ — 100/100) *No render-blocking resources* - **[PASS]** No render-blocking resources detected ### Resource Hints (A+ — 100/100) *1 hints, 0 missing preconnects* - **[PASS]** Page uses 1 resource hint(s) ### Page Weight Inventory (F — 15/100) *118 resources · 5.2 MB · 2.2 MB savings available* - **[WARNING]** Page weight 4.2 MB over 1MB target - **[INFO]** ~2.2 MB of savings available - **[WARNING]** 117 third-party resources (100% of weight) - **[INFO]** 4 resources over 200KB ### Render-Blocking Resources (A+ — 100/100) *No render-blocking resources detected* - **[PASS]** No render-blocking resources detected in ### Third-Party Resources (A+ — 100/100) *No third-party resources detected* --- ## Content Quality ### Links (F — 40/100) *200 links checked, 70 healthy, 130 broken* - **[CRITICAL]** 70 of 200 links are healthy - **[CRITICAL]** Broken link: https://oreilly.com/search/skills/microsoft-azure/ — Found in . Returns HTTP 403. - **[CRITICAL]** Broken link: https://oreilly.com/search/skills/amazon-web-services-aws/ — Found in . Returns HTTP 403. - **[CRITICAL]** Broken link: https://oreilly.com/search/skills/google-cloud/ — Found in . Returns HTTP 403. - **[CRITICAL]** Broken link: https://oreilly.com/search/skills/cloud-migration/ — Found in . Returns HTTP 403. - **[CRITICAL]** Broken link: https://oreilly.com/search/skills/cloud-deployment/ — Found in . Returns HTTP 403. - **[CRITICAL]** Broken link: https://oreilly.com/search/skills/cloud-platforms/ — Found in . Returns HTTP 403. - **[CRITICAL]** Broken link: https://oreilly.com/search/skills/cloud-computing/ — Found in . Returns HTTP 403. - **[CRITICAL]** Broken link: https://oreilly.com/search/skills/data-warehouse/ — Found in . Returns HTTP 403. - **[CRITICAL]** Broken link: https://oreilly.com/search/skills/sql/ — Found in . Returns HTTP 403. - **[CRITICAL]** Broken link: https://oreilly.com/search/skills/apache-spark/ — Found in . Returns HTTP 403. - **[CRITICAL]** Broken link: https://oreilly.com/search/skills/microsoft-sql-server/ — Found in . Returns HTTP 403. - **[CRITICAL]** Broken link: https://oreilly.com/search/skills/mysql/ — Found in . Returns HTTP 403. - **[CRITICAL]** Broken link: https://oreilly.com/search/skills/kafka/ — Found in . Returns HTTP 403. - **[CRITICAL]** Broken link: https://oreilly.com/search/skills/data-lake/ — Found in . Returns HTTP 403. - **[CRITICAL]** Broken link: https://oreilly.com/search/skills/streaming-messaging/ — Found in . Returns HTTP 403. - **[CRITICAL]** Broken link: https://oreilly.com/search/skills/nosql-databases/ — Found in . Returns HTTP 403. - **[CRITICAL]** Broken link: https://oreilly.com/search/skills/relational-databases/ — Found in . Returns HTTP 403. - **[CRITICAL]** Broken link: https://oreilly.com/search/skills/data-engineering/ — Found in . Returns HTTP 403. - **[CRITICAL]** Broken link: https://oreilly.com/search/topics/pandas/ — Found in . Returns HTTP 403. - **[CRITICAL]** Broken link: https://oreilly.com/search/topics/r/ — Found in . Returns HTTP 403. - **[CRITICAL]** Broken link: https://oreilly.com/search/topics/matlab/ — Found in . Returns HTTP 403. - **[CRITICAL]** Broken link: https://oreilly.com/search/topics/sas/ — Found in . Returns HTTP 403. - **[CRITICAL]** Broken link: https://oreilly.com/search/topics/d3/ — Found in . Returns HTTP 403. - **[CRITICAL]** Broken link: https://oreilly.com/search/topics/power-bi/ — Found in . Returns HTTP 403. - **[CRITICAL]** Broken link: https://oreilly.com/search/topics/tableau/ — Found in . Returns HTTP 403. - **[CRITICAL]** Broken link: https://oreilly.com/search/topics/statistics/ — Found in . Returns HTTP 403. - **[CRITICAL]** Broken link: https://oreilly.com/search/topics/exploratory-data-analysis/ — Found in . Returns HTTP 403. - **[CRITICAL]** Broken link: https://oreilly.com/search/topics/data-visualization/ — Found in . Returns HTTP 403. - **[CRITICAL]** Broken link: https://oreilly.com/search/skills/data-science/ — Found in . Returns HTTP 403. - **[CRITICAL]** Broken link: https://oreilly.com/search/skills/generative-ai/ — Found in . Returns HTTP 403. - **[CRITICAL]** Broken link: https://oreilly.com/search/skills/machine-learning/ — Found in . Returns HTTP 403. - **[CRITICAL]** Broken link: https://oreilly.com/search/skills/artificial-intelligence... — Found in . Returns HTTP 403. - **[CRITICAL]** Broken link: https://oreilly.com/search/skills/deep-learning/ — Found in . Returns HTTP 403. - **[CRITICAL]** Broken link: https://oreilly.com/search/skills/reinforcement-learning/ — Found in . Returns HTTP 403. - **[CRITICAL]** Broken link: https://oreilly.com/search/skills/natural-language-proces... — Found in . Returns HTTP 403. - **[CRITICAL]** Broken link: https://oreilly.com/search/skills/tensorflow/ — Found in . Returns HTTP 403. - **[CRITICAL]** Broken link: https://oreilly.com/search/skills/scikit-learn/ — Found in . Returns HTTP 403. - **[CRITICAL]** Broken link: https://oreilly.com/search/skills/hyperparameter-tuning/ — Found in . Returns HTTP 403. - **[CRITICAL]** Broken link: https://oreilly.com/search/skills/mlops/ — Found in . Returns HTTP 403. - **[CRITICAL]** Broken link: https://oreilly.com/search/skills/ai-ml/ — Found in . Returns HTTP 403. - **[CRITICAL]** Broken link: https://oreilly.com/search/skills/java/ — Found in . Returns HTTP 403. - **[CRITICAL]** Broken link: https://oreilly.com/search/skills/javascript/ — Found in . Returns HTTP 403. - **[CRITICAL]** Broken link: https://oreilly.com/search/skills/spring/ — Found in . Returns HTTP 403. - **[CRITICAL]** Broken link: https://oreilly.com/search/skills/python/ — Found in . Returns HTTP 403. - **[CRITICAL]** Broken link: https://oreilly.com/search/skills/go/ — Found in . Returns HTTP 403. - **[CRITICAL]** Broken link: https://oreilly.com/search/skills/c-sharp/ — Found in . Returns HTTP 403. - **[CRITICAL]** Broken link: https://oreilly.com/search/skills/c-plus-plus/ — Found in . Returns HTTP 403. - **[CRITICAL]** Broken link: https://oreilly.com/search/skills/c/ — Found in . Returns HTTP 403. - **[CRITICAL]** Broken link: https://oreilly.com/search/skills/swift/ — Found in . Returns HTTP 403. - **[CRITICAL]** Broken link: https://oreilly.com/search/skills/rust/ — Found in . Returns HTTP 403. - **[CRITICAL]** Broken link: https://oreilly.com/search/skills/functional-programming/ — Found in . Returns HTTP 403. - **[CRITICAL]** Broken link: https://oreilly.com/search/skills/programming-languages/ — Found in . Returns HTTP 403. - **[CRITICAL]** Broken link: https://oreilly.com/search/skills/object-oriented-archite... — Found in . Returns HTTP 403. - **[CRITICAL]** Broken link: https://oreilly.com/search/skills/distributed-systems/ — Found in . Returns HTTP 403. - **[CRITICAL]** Broken link: https://oreilly.com/search/skills/domain-driven-design/ — Found in . Returns HTTP 403. - **[CRITICAL]** Broken link: https://oreilly.com/search/skills/architectural-patterns/ — Found in . Returns HTTP 403. - **[CRITICAL]** Broken link: https://oreilly.com/search/skills/software-architecture/ — Found in . Returns HTTP 403. - **[CRITICAL]** Broken link: https://oreilly.com/search/topics/kubernetes/ — Found in . Returns HTTP 403. - **[CRITICAL]** Broken link: https://oreilly.com/search/topics/docker/ — Found in . Returns HTTP 403. - **[CRITICAL]** Broken link: https://oreilly.com/search/topics/github/ — Found in . Returns HTTP 403. - **[CRITICAL]** Broken link: https://oreilly.com/search/topics/terraform/ — Found in . Returns HTTP 403. - **[CRITICAL]** Broken link: https://oreilly.com/search/topics/continuous-delivery/ — Found in . Returns HTTP 403. - **[CRITICAL]** Broken link: https://oreilly.com/search/topics/continuous-integration/ — Found in . Returns HTTP 403. - **[CRITICAL]** Broken link: https://oreilly.com/search/topics/database-administration/ — Found in . Returns HTTP 403. - **[CRITICAL]** Broken link: https://oreilly.com/search/topics/computer-networking/ — Found in . Returns HTTP 403. - **[CRITICAL]** Broken link: https://oreilly.com/search/topics/operating-systems/ — Found in . Returns HTTP 403. - **[CRITICAL]** Broken link: https://oreilly.com/search/topics/it-certifications/ — Found in . Returns HTTP 403. - **[CRITICAL]** Broken link: https://oreilly.com/search/skills/it-operations/ — Found in . Returns HTTP 403. - **[CRITICAL]** Broken link: https://oreilly.com/search/skills/network-security/ — Found in . Returns HTTP 403. - **[CRITICAL]** Broken link: https://oreilly.com/search/skills/application-security/ — Found in . Returns HTTP 403. - **[CRITICAL]** Broken link: https://oreilly.com/search/skills/incident-response/ — Found in . Returns HTTP 403. - **[CRITICAL]** Broken link: https://oreilly.com/search/skills/zero-trust-model/ — Found in . Returns HTTP 403. - **[CRITICAL]** Broken link: https://oreilly.com/search/skills/disaster-recovery/ — Found in . Returns HTTP 403. - **[CRITICAL]** Broken link: https://oreilly.com/search/skills/penetration-testing-eth... — Found in . Returns HTTP 403. - **[CRITICAL]** Broken link: https://oreilly.com/search/skills/governance/ — Found in . Returns HTTP 403. - **[CRITICAL]** Broken link: https://oreilly.com/search/skills/malware/ — Found in . Returns HTTP 403. - **[CRITICAL]** Broken link: https://oreilly.com/search/skills/security-architecture/ — Found in . Returns HTTP 403. - **[CRITICAL]** Broken link: https://oreilly.com/search/skills/security-engineering/ — Found in . Returns HTTP 403. - **[CRITICAL]** Broken link: https://oreilly.com/search/skills/security-certifications/ — Found in . Returns HTTP 403. - **[CRITICAL]** Broken link: https://oreilly.com/search/skills/security/ — Found in . Returns HTTP 403. - **[CRITICAL]** Broken link: https://oreilly.com/search/skills/web-design/ — Found in . Returns HTTP 403. - **[CRITICAL]** Broken link: https://oreilly.com/search/skills/graphic-design/ — Found in . Returns HTTP 403. - **[CRITICAL]** Broken link: https://oreilly.com/search/skills/interaction-design/ — Found in . Returns HTTP 403. - **[CRITICAL]** Broken link: https://oreilly.com/search/skills/film-video/ — Found in . Returns HTTP 403. - **[CRITICAL]** Broken link: https://oreilly.com/search/skills/user-experience-ux/ — Found in . Returns HTTP 403. - **[CRITICAL]** Broken link: https://oreilly.com/search/skills/design-process/ — Found in . Returns HTTP 403. - **[CRITICAL]** Broken link: https://oreilly.com/search/skills/design-tools/ — Found in . Returns HTTP 403. - **[CRITICAL]** Broken link: https://oreilly.com/search/skills/design/ — Found in . Returns HTTP 403. - **[CRITICAL]** Broken link: https://oreilly.com/search/skills/agile/ — Found in . Returns HTTP 403. - **[CRITICAL]** Broken link: https://oreilly.com/search/skills/project-management/ — Found in . Returns HTTP 403. - **[CRITICAL]** Broken link: https://oreilly.com/search/skills/product-management/ — Found in . Returns HTTP 403. - **[CRITICAL]** Broken link: https://oreilly.com/search/skills/marketing/ — Found in . Returns HTTP 403. - **[CRITICAL]** Broken link: https://oreilly.com/search/skills/human-resources/ — Found in . Returns HTTP 403. - **[CRITICAL]** Broken link: https://oreilly.com/search/skills/finance/ — Found in . Returns HTTP 403. - **[CRITICAL]** Broken link: https://oreilly.com/search/skills/team-management/ — Found in . Returns HTTP 403. - **[CRITICAL]** Broken link: https://oreilly.com/search/skills/business-strategy/ — Found in . Returns HTTP 403. - **[CRITICAL]** Broken link: https://oreilly.com/search/skills/digital-transformation/ — Found in . Returns HTTP 403. - **[CRITICAL]** Broken link: https://oreilly.com/search/skills/organizational-leadership/ — Found in . Returns HTTP 403. - **[CRITICAL]** Broken link: https://oreilly.com/search/skills/business/ — Found in . Returns HTTP 403. - **[CRITICAL]** Broken link: https://oreilly.com/search/skills/professional-communicat... — Found in . Returns HTTP 403. - **[CRITICAL]** Broken link: https://oreilly.com/search/skills/emotional-intelligence/ — Found in . Returns HTTP 403. - **[CRITICAL]** Broken link: https://oreilly.com/search/skills/presentation-skills/ — Found in . Returns HTTP 403. - **[CRITICAL]** Broken link: https://oreilly.com/search/skills/innovation/ — Found in . Returns HTTP 403. - **[CRITICAL]** Broken link: https://oreilly.com/search/skills/critical-thinking/ — Found in . Returns HTTP 403. - **[CRITICAL]** Broken link: https://oreilly.com/search/skills/public-speaking/ — Found in . Returns HTTP 403. - **[CRITICAL]** Broken link: https://oreilly.com/search/skills/collaboration/ — Found in . Returns HTTP 403. - **[CRITICAL]** Broken link: https://oreilly.com/search/skills/personal-productivity/ — Found in . Returns HTTP 403. - **[CRITICAL]** Broken link: https://oreilly.com/search/skills/confidence-motivation/ — Found in . Returns HTTP 403. - **[CRITICAL]** Broken link: https://oreilly.com/search/skills/soft-skills/ — Found in . Returns HTTP 403. - **[CRITICAL]** Broken link: https://oreilly.com/search/skills/ — Found in . Returns HTTP 403. - **[CRITICAL]** Broken link: https://oreilly.com/online-learning/features.html — Found in . Returns HTTP 403. - **[CRITICAL]** Broken link: https://oreilly.com/online-learning/verifiable-skills.html — Found in . Returns HTTP 403. - **[CRITICAL]** Broken link: https://oreilly.com/online-learning/academies.html — Found in . Returns HTTP 403. - **[CRITICAL]** Broken link: https://oreilly.com/online-learning/courses.html — Found in . Returns HTTP 403. - **[CRITICAL]** Broken link: https://oreilly.com/online-learning/feature-certification... — Found in . Returns HTTP 403. - **[CRITICAL]** Broken link: https://oreilly.com/online-learning/intro-interactive-lea... — Found in . Returns HTTP 403. - **[CRITICAL]** Broken link: https://oreilly.com/online-learning/live-events.html — Found in . Returns HTTP 403. - **[CRITICAL]** Broken link: https://oreilly.com/products/superstreams.html — Found in . Returns HTTP 403. - **[CRITICAL]** Broken link: https://oreilly.com/online-learning/feature-answers.html — Found in . Returns HTTP 403. - **[CRITICAL]** Broken link: https://oreilly.com/online-learning/insights-dashboard.html — Found in . Returns HTTP 403. - **[CRITICAL]** Broken link: https://oreilly.com/radar/ — Found in . Returns HTTP 403. - **[CRITICAL]** Broken link: https://oreilly.com/live/ — Found in . Returns HTTP 403. - **[CRITICAL]** Broken link: https://oreilly.com/about/ — Found in . Returns HTTP 403. - **[CRITICAL]** Broken link: https://oreilly.com/work-with-us.html — Found in . Returns HTTP 403. - **[CRITICAL]** Broken link: https://oreilly.com/careers/ — Found in . Returns HTTP 403. - **[CRITICAL]** Broken link: https://oreilly.com/press/ — Found in . Returns HTTP 403. - **[CRITICAL]** Broken link: https://oreilly.com/press/media-coverage.html — Found in . Returns HTTP 403. - **[CRITICAL]** Broken link: https://oreilly.com/partner/signup.csp — Found in . Returns HTTP 403. - **[CRITICAL]** Broken link: https://oreilly.com/affiliates/ — Found in . Returns HTTP 403. - **[CRITICAL]** Broken link: https://oreilly.com/online-learning/rfp.html — Found in . Returns HTTP 403. ### Mixed Content (A+ — 100/100) *No mixed content detected — all resources use HTTPS.* - **[PASS]** No mixed content detected — all resources use HTTPS ### Open Graph (D — 65/100) *Open Graph tags need attention — social sharing previews may be incomplete.* - **[CRITICAL]** og:image is not reachable — The og:image URL could not be fetched. Social platforms won't be able to display it. - **[WARNING]** Missing og:description — The og:description tag controls the description in social sharing previews. - **[INFO]** Missing og:url — The og:url tag specifies the canonical URL for the shared content. - **[INFO]** Missing og:site_name — The og:site_name tag displays the website name in social previews. ### Structured Data (A+ — 100/100) *1 JSON-LD block(s) found — structured data is well configured.* - **[PASS]** Custom type "Corporation" — unable to validate specific properties --- ## Infrastructure ### DNS Records (A+ — 95/100) *1 A records, 101 ms lookup* - **[PASS]** Resolves to 1 IPv4 address(es) - **[INFO]** Single A record — no DNS redundancy — Multiple A records provide failover if one server goes down. - **[INFO]** No IPv6 (AAAA) records - **[PASS]** 6 nameserver(s) configured - **[PASS]** 5 mail exchanger(s) configured - **[INFO]** CAA records not checked — CAA record lookup requires a specialized DNS resolver. This check will be available in a future update. - **[PASS]** SPF record present in TXT - **[PASS]** DNS resolution time: 101 ms ### Redirect Chain (A — 90/100) *1 redirect(s), 584 ms total* - **[PASS]** Single redirect - **[INFO]** WWW normalization redirect - **[INFO]** Redirect overhead: 584 ms total ### IPv6 Readiness (C — 60/100) *No IPv6 support* - **[INFO]** No IPv6 (AAAA) records found — IPv6 support is increasingly important for global accessibility. About 40% of internet users have IPv6 connectivity. ### Crawlability (A+ — 100/100) *robots.txt present, sitemap with 5 URLs* - **[PASS]** robots.txt is present - **[PASS]** sitemap.xml is present - **[PASS]** sitemap.xml is valid XML - **[PASS]** sitemap.xml contains 5 entries - **[PASS]** Sitemap index with 5 child sitemaps - **[PASS]** robots.txt references sitemap ### URL Variants (A+ — 100/100) *www/non-www, trailing slash, HTTP→HTTPS* - **[PASS]** HTTP correctly 301-redirects to HTTPS ### Domain Intelligence (A+ — 100/100) *oreilly.com — via GoDaddy.com, LLC, 29 years, 3 months old, hosted on Google Cloud* - **[PASS]** Domain registered until May 26, 2027 (1 years, 1 months remaining) - **[INFO]** DNSSEC is not enabled — DNSSEC protects against DNS spoofing attacks. While not required, enabling DNSSEC adds an additional layer of security. Contact your DNS provider to enable it. - **[PASS]** Registrar: GoDaddy.com, LLC - **[WARNING]** Registrar lock is NOT enabled — The domain can be transferred without an unlock step. Enable registrar lock (clientTransferProhibited) in your registrar's control panel to protect against unauthorized or accidental transfers. - **[PASS]** Hosting: Google Cloud --- ## Compliance ### WCAG Compliance (A+ — 100/100) *No testable criteria* ### Cookie Consent & Privacy (B — 80/100) *No consent signals detected* - **[WARNING]** No privacy policy link detected — A privacy policy page is recommended for transparency and may be legally required. - **[INFO]** No terms of service link detected - **[INFO]** No cookie consent banner detected - **[INFO]** This is an automated check, not legal advice — BeaverCheck detects technical indicators of consent management. This does not constitute a legal compliance assessment. Consult a privacy professional for GDPR/CCPA compliance. ### Language & i18n (A — 90/100) *Lang attribute present* - **[PASS]** attribute is present - **[PASS]** value is valid - **[INFO]** No Content-Language HTTP header - **[INFO]** Language signals are inconsistent — The attribute and Content-Language header should agree. ### Readability & Typography (A+ — 100/100) *Font sizes and tap targets checked* ### Viewport Configuration (A+ — 100/100) *Viewport properly configured* - **[PASS]** Viewport meta tag is present - **[PASS]** width=device-width is set - **[PASS]** User zooming is allowed ### Third-Party Trackers (C — 55/100) *6 trackers detected* - **[INFO]** 6 third-party trackers detected — Found 5 analytics, 0 advertising, 0 marketing, 1 tag manager trackers. - **[WARNING]** Trackers detected but no cookie policy found — This page loads 6 trackers but no cookie policy was detected. GDPR requires disclosure when using tracking cookies. - **[WARNING]** Trackers detected but no privacy policy found — Most data protection regulations require a privacy policy when collecting user data via trackers. ### Cookie & Tracker Inventory (A+ — 100/100) *0 cookies · 6 trackers · 0 pre-consent* - **[INFO]** 6 third-party tracker(s) detected on page --- ## Legal ### Legal Page Ecosystem (C — 60/100) *2 of 7 expected legal pages detected* - **[PASS]** Privacy Policy detected — Found at /privacy.html, linked from footer. - **[PASS]** Terms of Service detected — Found at https://www.oreilly.com/terms/, linked from footer. - **[INFO]** Cookie Policy not detected — No link matching common Cookie Policy URL patterns or link text was found. Most websites are expected to have a Cookie Policy, especially those collecting user data. - **[INFO]** Accessibility Statement not detected — No link matching common Accessibility Statement URL patterns or link text was found. Most websites are expected to have a Accessibility Statement, especially those collecting user data. - **[INFO]** DMCA / Copyright Notice not detected — No link matching common DMCA / Copyright Notice URL patterns or link text was found. Most websites are expected to have a DMCA / Copyright Notice, especially those collecting user data. - **[INFO]** Refund / Returns Policy not detected — No link matching common Refund / Returns Policy URL patterns or link text was found. Most websites are expected to have a Refund / Returns Policy, especially those collecting user data. - **[INFO]** Acceptable Use Policy not detected — No link matching common Acceptable Use Policy URL patterns or link text was found. Most websites are expected to have a Acceptable Use Policy, especially those collecting user data. ### Copyright Notice (C — 55/100) *No copyright notice detected* - **[INFO]** No copyright notice detected — No copyright notice detected in the page content. While not legally required in most jurisdictions (copyright exists automatically), a notice is standard practice and signals site ownership. ### Regulatory Indicators *3 regulatory indicator(s) detected* - **[INFO]** This is a technical scan, not a legal assessment — BeaverCheck detects technical indicators that may suggest regulatory relevance. This is not a compliance audit and should not be relied upon for legal decisions. Consult qualified legal counsel for compliance assessments. - **[INFO]** GDPR indicators detected (strong confidence) — Indicators suggesting GDPR may be relevant: Consent management platform detected: cookielaw.org; Privacy policy page found. EU General Data Protection Regulation — governs collection and processing of personal data of EU residents. - **[INFO]** CCPA indicators detected (strong confidence) — Indicators suggesting CCPA may be relevant: Text mentions: do not sell; Link text: Do not sell or share my personal information. California Consumer Privacy Act — gives California residents rights over their personal data. - **[INFO]** HIPAA indicators detected (weak confidence) — Indicators suggesting HIPAA may be relevant: Text mentions: phi. Health Insurance Portability and Accountability Act — protects sensitive patient health information. ### Third-Party Data Sharing *2 third-party service(s) detected* - **[INFO]** Data inventory for transparency purposes — This inventory identifies third-party services that receive data from your site visitors. Under regulations like GDPR (Article 30), maintaining records of data processing activities is commonly considered a best practice. This automated scan provides a starting point — it may not capture all data flows. - **[INFO]** 2 third-party services across 2 categories — 2 third-party services detected across 2 categories: Analytics (1), Tag Management (1). Each of these services receives some user data from your site visitors. - **[INFO]** Google Analytics (Analytics) — Detected via script URL. Typically collects: Page views, User behavior, Demographics, Device info, IP address. Privacy policy: https://policies.google.com/privacy. Data Processing Agreement available. - **[INFO]** Google Tag Manager (Tag Management) — Detected via script URL. Typically collects: Orchestrates other tracking scripts, Page views. Privacy policy: https://policies.google.com/privacy. Data Processing Agreement available. ### Compliance Badges (C — 55/100) *0 compliance badge(s) detected* - **[INFO]** No compliance badges detected — No recognized compliance certification badges or seals were found. This is common — many sites do not display compliance badges. --- ## Availability ### CDN & Delivery (D — 50/100) *No CDN detected* - **[WARNING]** No CDN detected — A CDN can significantly improve load times for users around the world by caching content at edge nodes closer to them. ### HTTP Caching (A — 90/100) *max-age=2592000 (4 weeks)* - **[PASS]** Cache-Control header is set - **[PASS]** Effective TTL: 4 weeks (max-age=2592000) - **[INFO]** No ETag or Last-Modified header — Conditional requests (304 Not Modified) are not possible without validators. ### Transport Security (B — 75/100) *HTTP/3, HSTS, and TLS version analysis* - **[INFO]** HTTP/3 (QUIC) not advertised — HTTP/3 eliminates head-of-line blocking. If your CDN supports it, consider enabling it. - **[WARNING]** Missing Strict-Transport-Security header — HSTS tells browsers to only use HTTPS, preventing SSL stripping attacks. - **[PASS]** TLS 1.3 in use (fastest handshake, 1-RTT) --- ## Accessibility ### Landmark Structure (A — 90/100) *46 landmarks* - **[PASS]**
landmark present - **[PASS]** 4