# BeaverCheck Audit Report — https://rwth-aachen.de **Date:** April 21, 2026 **URL:** https://rwth-aachen.de **Overall Grade:** B (83/100) **Report:** https://beavercheck.com/results/8f298baa-046f-4dae-8c60-74bce3b5071f ## Top Findings 1. **[WARNING]** 46 third-party resources (100% of weight) — Performance > Page Weight Inventory 2. **[WARNING]** Cookie 'awcssessionid' has no SameSite attribute — Security > Cookie Security 3. **[WARNING]** Cross-Origin-Embedder-Policy header is missing — Security > Security Headers 4. **[WARNING]** Cross-Origin-Opener-Policy header is missing — Security > Security Headers 5. **[WARNING]** HSTS max-age is too short (15768000s, should be ≥ 31536000s) — Security > Security Headers --- ## Lighthouse Scores | Category | Score | |----------|-------| | Performance | 63 | | Accessibility | 97 | | Best Practices | 100 | | SEO | 92 | --- ## Security ### Security Headers (C — 60/100) *5 of 10 headers properly configured* - **[WARNING]** HSTS max-age is too short (15768000s, should be ≥ 31536000s) — A short max-age leaves a window for downgrade attacks. Set max-age to at least 31536000 (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'. - **[PASS]** X-Frame-Options is properly configured - **[WARNING]** Referrer-Policy has a weak value - **[PASS]** Permissions-Policy is set - **[PASS]** Content-Security-Policy is present - **[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 not present ### Content Security Policy (B — 70/100) *2 of 10 CSP checks passed* - **[INFO]** Raw CSP policy - **[WARNING]** default-src directive is missing — default-src provides a fallback for other directives. Set it to restrict default resource loading. - **[INFO]** No script-src or default-src to check for 'unsafe-inline' - **[INFO]** No script-src or default-src to check for 'unsafe-eval' - **[INFO]** No script-src or default-src to check for wildcard - **[PASS]** object-src falls back to default-src - **[WARNING]** base-uri directive is missing — Without base-uri, attackers can inject a tag to hijack relative URLs. Set it to 'self' or 'none'. - **[PASS]** frame-ancestors directive is set - **[WARNING]** form-action directive is missing — form-action restricts where forms can submit data, preventing form hijacking. - **[INFO]** upgrade-insecure-requests is not set — This directive upgrades HTTP resources to HTTPS automatically, preventing mixed content. ### TLS & Certificates (A+ — 100/100) *TLS 1.2, 7 checks passed* - **[PASS]** TLS 1.2 is used - **[INFO]** TLS 1.3 is not negotiated — TLS 1.3 offers improved performance and security. Consider enabling it. - **[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 170 days) - **[PASS]** Certificate chain has 2 certificates - **[PASS]** Certificate uses modern signature algorithm - **[PASS]** Certificate covers 2 domain(s) - **[PASS]** Certificate is issued by a trusted CA ### Cookie Security (A+ — 95/100) *1 cookies analyzed, 2 checks passed* - **[PASS]** Cookie 'awcssessionid' has the Secure flag - **[PASS]** Cookie 'awcssessionid' has the HttpOnly flag - **[WARNING]** Cookie 'awcssessionid' has no SameSite attribute — Without an explicit SameSite attribute, browser default behavior varies. Set SameSite=Lax or Strict. --- ## Advanced Security ### Subresource Integrity (A+ — 100/100) *No external resources* - **[PASS]** No external resources to protect ### JS Library Vulnerabilities (A+ — 100/100) *No known vulnerabilities* - **[PASS]** No known JavaScript library vulnerabilities detected ### Information Leakage (A+ — 100/100) *No exposures* - **[PASS]** security.txt is present — good practice - **[PASS]** No sensitive files exposed ### Email Security (A+ — 100/100) *DMARC: reject* - **[PASS]** DMARC policy is reject — strongest protection ### Permissions-Policy (B — 70/100) *2 directives, 3 missing* - **[PASS]** camera=() — blocked for all origins - **[PASS]** microphone=() — blocked for all origins - **[INFO]** geolocation not restricted — Consider adding geolocation=() to block geolocation access from embedded content. - **[INFO]** payment not restricted — Consider adding payment=() to block payment access from embedded content. - **[INFO]** usb not restricted — Consider adding usb=() to block usb access from embedded content. ### CORS Configuration (B — 80/100) *No CORS headers* - **[PASS]** No CORS headers present — secure default --- ## Performance ### Page Weight Budget (D — 52/100) *2.2 MB transferred, 48 requests* - **[INFO]** Page weighs 2.6 MB (2.2 MB transferred) - **[WARNING]** Images are 1.8 MB — compress or use modern formats — Convert images to WebP/AVIF and resize to display dimensions to reduce transfer size. - **[INFO]** Fonts are 230 KB — consider subsetting or using system fonts — Subset fonts to include only used characters, or switch to system font stacks. - **[PASS]** 48 HTTP requests - **[INFO]** Estimated 0.45 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 (2.2 MiB of 2.2 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) *33 images, 0 KB saveable* - **[WARNING]** https://www.rwth-aachen.de/global/show_picture.asp... is missing width/height — may cause layout shift — Set explicit width and height to prevent CLS. - **[WARNING]** https://www.rwth-aachen.de/global/show_picture.asp... is missing width/height — may cause layout shift — Set explicit width and height to prevent CLS. - **[WARNING]** https://www.rwth-aachen.de/global/show_picture.asp... is missing width/height — may cause layout shift — Set explicit width and height to prevent CLS. ### JS Execution Cost (C — 60/100) *1447ms total JS execution* - **[WARNING]** https://www.rwth-aachen.de/cms/~a/root/?lidx=1: 641ms CPU time - **[WARNING]** https://www.rwth-aachen.de/custom/rwth/resources/j...: 525ms CPU time - **[WARNING]** Unattributable: 281ms CPU time - **[WARNING]** Third-party scripts: 1447ms (100% of total) ### Font Loading (A+ — 100/100) *3 fonts (230 KB)* - **[INFO]** 3 font(s) use font-display: swap (FOUT risk but functional) ### JS Bundles (A+ — 100/100) *1 scripts, 30 KB unused* - **[WARNING]** https://www.rwth-aachen.de/custom/rwth/resources/j...: 30 KB unused (60%) — Consider code splitting or tree shaking to reduce unused code. - **[INFO]** Total unused JavaScript: 30 KB ### 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) *3 hints, 0 missing preconnects* - **[PASS]** Page uses 3 resource hint(s) ### Page Weight Inventory (D — 45/100) *48 resources · 2.2 MB · 30 KB savings available* - **[WARNING]** Page weight 1.2 MB over 1MB target - **[WARNING]** 46 third-party resources (100% of weight) - **[INFO]** 1 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, 166 healthy, 34 broken* - **[CRITICAL]** 166 of 200 links are healthy - **[WARNING]** Broken link: https://www.rwth-aachen.de/cms/~a/root/?lidx=1 — Found in . Get "https://www.rwth-aachen.de/cms/~a/root/?lidx=1": context deadline exceeded - **[WARNING]** Broken link: https://rwth-aachen.de/apple-touch-icon-57x57.png — Found in . Get "https://rwth-aachen.de/apple-touch-icon-57x57.png": context deadline exceeded - **[WARNING]** Broken link: https://rwth-aachen.de/apple-touch-icon-114x114.png — Found in . Get "https://rwth-aachen.de/apple-touch-icon-114x114.png": context deadline exceeded - **[WARNING]** Broken link: https://rwth-aachen.de/apple-touch-icon-72x72.png — Found in . Get "https://rwth-aachen.de/apple-touch-icon-72x72.png": context deadline exceeded - **[WARNING]** Broken link: https://rwth-aachen.de/apple-touch-icon-152x152.png — Found in . Get "https://rwth-aachen.de/apple-touch-icon-152x152.png": context deadline exceeded - **[WARNING]** Broken link: https://rwth-aachen.de/favicon-196x196.png — Found in . Get "https://rwth-aachen.de/favicon-196x196.png": context deadline exceeded - **[WARNING]** Broken link: https://rwth-aachen.de/favicon-192x192.png — Found in . Get "https://rwth-aachen.de/favicon-192x192.png": context deadline exceeded - **[WARNING]** Broken link: https://rwth-aachen.de/favicon-160x160.png — Found in . Get "https://rwth-aachen.de/favicon-160x160.png": context deadline exceeded - **[WARNING]** Broken link: https://rwth-aachen.de/favicon-96x96.png — Found in . Get "https://rwth-aachen.de/favicon-96x96.png": context deadline exceeded - **[WARNING]** Broken link: https://rwth-aachen.de/favicon-16x16.png — Found in . Get "https://rwth-aachen.de/favicon-16x16.png": context deadline exceeded - **[WARNING]** Broken link: https://rwth-aachen.de/favicon-32x32.png — Found in . Get "https://rwth-aachen.de/favicon-32x32.png": context deadline exceeded - **[WARNING]** Broken link: https://rwth-aachen.de/android-chrome-192x192.png — Found in . Get "https://rwth-aachen.de/android-chrome-192x192.png": context deadline exceeded - **[WARNING]** Broken link: https://rwth-aachen.de/manifest.json — Found in . Get "https://rwth-aachen.de/manifest.json": context deadline exceeded - **[WARNING]** Broken link: https://rwth-aachen.de/safari-pinned-tab.svg — Found in . Get "https://rwth-aachen.de/safari-pinned-tab.svg": context deadline exceeded - **[WARNING]** Broken link: https://www.rwth-aachen.de/content — Found in . Get "https://www.rwth-aachen.de/content": context deadline exceeded - **[WARNING]** Broken link: https://www.rwth-aachen.de/sitecredits — Found in . Get "https://www.rwth-aachen.de/sitecredits": context deadline exceeded - **[WARNING]** Broken link: https://www.rwth-aachen.de/feedback — Found in . Get "https://www.rwth-aachen.de/feedback": context deadline exceeded - **[WARNING]** Broken link: https://www.rwth-aachen.de/search — Found in . Get "https://www.rwth-aachen.de/search": context deadline exceeded - **[WARNING]** Broken link: https://www.rwth-aachen.de/cms/root/Die-RWTH/Aktuell/~uma... — Found in . Get "https://www.rwth-aachen.de/cms/root/Die-RWTH/Aktuell/~uma/Pressemitteilungen/lidx/1/?rss=1&dateid=1": context deadline exceeded - **[CRITICAL]** Broken link: https://rwth-aachen.de/cms/root/Zielgruppenportale/~cgjnl... — Found in . Get "https://rwth-aachen.de/cms/root/Zielgruppenportale/~cgjnl/Studienanfaengerinnen-und-anfaenger/lidx/1/": context deadline exceeded - **[CRITICAL]** Broken link: https://rwth-aachen.de/cms/root/Zielgruppenportale/~uzk/U... — Found in . Get "https://rwth-aachen.de/cms/root/Zielgruppenportale/~uzk/Unternehmen/lidx/1/": context deadline exceeded - **[CRITICAL]** Broken link: https://rwth-aachen.de/cms/root/wir/Einrichtungen/Verwalt... — Found in . Get "https://rwth-aachen.de/cms/root/wir/Einrichtungen/Verwaltung/Dezernate/Presse-und-Kommunikation/~ytuon/3-1-Presse-Publikationen-und-Social-M/lidx/1/": context deadline exceeded - **[CRITICAL]** Broken link: https://www.rwth-aachen.de/cms/root/studium/~hzvj/beratun... — Found in . Get "https://www.rwth-aachen.de/cms/root/studium/~hzvj/beratung-hilfe/?lidx=1": context deadline exceeded - **[CRITICAL]** Broken link: https://www.rwth-aachen.de/cms/root/wir/aktuell/~xhf/amtl... — Found in . Get "https://www.rwth-aachen.de/cms/root/wir/aktuell/~xhf/amtliche-bekanntmachungen/?lidx=1": context deadline exceeded - **[CRITICAL]** Broken link: https://www.rwth-aachen.de/cms/root/Die-RWTH/Einrichtunge... — Found in . Get "https://www.rwth-aachen.de/cms/root/Die-RWTH/Einrichtungen/Einrichtungen-A-Z/~bzwt/Liste-aller-Organisationseinheiten/?lidx=1": context deadline exceeded - **[CRITICAL]** Broken link: https://rwth-aachen.de/cms/root/studium/Vor-dem-Studium/~... — Found in . Get "https://rwth-aachen.de/cms/root/studium/Vor-dem-Studium/~efk/Warum-die-RWTH-Aachen/lidx/1/": context deadline exceeded - **[CRITICAL]** Broken link: https://rwth-aachen.de/cms/root/studium/Vor-dem-Studium/~... — Found in . Get "https://rwth-aachen.de/cms/root/studium/Vor-dem-Studium/~ccuo/Veranstaltungskalender-Schuelerinnen/lidx/1/": context deadline exceeded - **[CRITICAL]** Broken link: https://rwth-aachen.de/cms/root/studium/Im-Studium/~ehw/O... — Found in . Get "https://rwth-aachen.de/cms/root/studium/Im-Studium/~ehw/Online-Dienste/lidx/1/": context deadline exceeded - **[CRITICAL]** Broken link: https://rwth-aachen.de/cms/root/studium/Im-Studium/~qoita... — Found in . Get "https://rwth-aachen.de/cms/root/studium/Im-Studium/~qoita/Student-Lifecycle-Management/lidx/1/": context deadline exceeded - **[CRITICAL]** Broken link: https://rwth-aachen.de/cms/root/studium/Nach-dem-Studium/... — Found in . Get "https://rwth-aachen.de/cms/root/studium/Nach-dem-Studium/~ejx/Karriere/lidx/1/": context deadline exceeded - **[CRITICAL]** Broken link: https://rwth-aachen.de/cms/root/studium/Nach-dem-Studium/... — Found in . Get "https://rwth-aachen.de/cms/root/studium/Nach-dem-Studium/~ekj/Alumni/lidx/1/": context deadline exceeded - **[CRITICAL]** Broken link: https://rwth-aachen.de/cms/root/studium/Nach-dem-Studium/... — Found in . Get "https://rwth-aachen.de/cms/root/studium/Nach-dem-Studium/~emes/Graduiertenfest/lidx/1/": context deadline exceeded - **[CRITICAL]** Broken link: https://rwth-aachen.de/cms/root/studium/~hihq/Lehre/lidx/1/ — Found in . Get "https://rwth-aachen.de/cms/root/studium/~hihq/Lehre/lidx/1/": context deadline exceeded - **[CRITICAL]** Broken link: https://rwth-aachen.de/cms/root/wir/Profil/~bure/Internat... — Found in . Get "https://rwth-aachen.de/cms/root/wir/Profil/~bure/Internationalisierung/lidx/1/": context deadline exceeded ### Mixed Content (A+ — 100/100) *No mixed content detected — all resources use HTTPS.* - **[PASS]** No mixed content detected — all resources use HTTPS ### Open Graph (F — 0/100) *No Open Graph tags found — social sharing previews will be generic.* - **[WARNING]** No Open Graph meta tags found — Without og:title, og:description, and og:image, social media platforms will generate a generic preview when your page is shared. ### Structured Data (C — 40/100) *No structured data (JSON-LD) found.* - **[INFO]** No structured data (JSON-LD) found — Adding structured data helps search engines understand your content and can enable rich results. --- ## Infrastructure ### DNS Records (A+ — 95/100) *1 A records, 36 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. - **[PASS]** Has 1 IPv6 (AAAA) record(s) - **[PASS]** 4 nameserver(s) configured - **[PASS]** 1 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: 36 ms ### Redirect Chain (B — 70/100) *2 redirect(s), 769 ms total* - **[WARNING]** 2 redirects before reaching final URL — Each redirect adds latency. Try to minimize the chain to 1 hop. - **[INFO]** WWW normalization redirect - **[INFO]** Uses 302 (temporary) redirect — If permanent, use 301 instead. - **[INFO]** Redirect overhead: 769 ms total ### IPv6 Readiness (A+ — 100/100) *IPv6 reachable (29 ms)* - **[PASS]** IPv6 is configured and reachable at 2a00:8a60:450::107:60 ### Crawlability (A+ — 95/100) *robots.txt present, sitemap with 5484 URLs* - **[PASS]** robots.txt is present - **[PASS]** sitemap.xml is present - **[PASS]** sitemap.xml is valid XML - **[PASS]** sitemap.xml contains 5484 entries - **[INFO]** robots.txt does not reference a sitemap — Add a 'Sitemap:' directive to robots.txt so search engines can discover your sitemap. ### URL Variants (A+ — 100/100) *www/non-www, trailing slash, HTTP→HTTPS* - **[PASS]** www/non-www redirect configured correctly (preferred: non-www) - **[PASS]** HTTP correctly 301-redirects to HTTPS ### Domain Intelligence (A+ — 100/100) *rwth-aachen.de* - **[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. --- ## 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 - **[PASS]** 1 cookie(s) set on initial load (functional) - **[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) *1 trackers detected* - **[INFO]** 1 third-party trackers detected — Found 1 analytics, 0 advertising, 0 marketing, 0 tag manager trackers. - **[WARNING]** Trackers detected but no cookie policy found — This page loads 1 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) *1 cookies · 1 trackers · 0 pre-consent* - **[INFO]** 1 cookie(s) could not be classified - **[INFO]** 1 third-party tracker(s) detected on page --- ## Legal ### Legal Page Ecosystem (D — 40/100) *2 of 7 expected legal pages detected* - **[PASS]** Privacy Policy detected — Found at /cms/root/Footer/Services/~cesv/Datenschutzerklaerung/lidx/1/. - **[WARNING]** Terms of Service not detected — No link matching common Terms of Service URL patterns or link text was found. Most websites are expected to have a Terms of Service, especially those collecting user data. - **[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. - **[PASS]** Accessibility Statement detected — Found at /cms/root/Footer/Services/~jzbek/Barrierefreiheitserklaerung/lidx/1/. - **[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 (A+ — 100/100) *© 2026 RWTH Aachen University Social Media Instagram Link* - **[PASS]** Copyright notice is up to date — Copyright notice is up to date: © 2026 RWTH Aachen University Social Media Instagram Link - **[PASS]** Copyright holder: RWTH Aachen University Social Media Instagram Link ### Regulatory Indicators *2 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: European TLD detected: .de; Privacy policy page found. EU General Data Protection Regulation — governs collection and processing of personal data of EU residents. - **[INFO]** ADA indicators detected (moderate confidence) — Indicators suggesting ADA may be relevant: Accessibility link found: Accessibility Statement. Americans with Disabilities Act / Section 508 — requires digital accessibility for people with disabilities. ### Third-Party Data Sharing *0 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]** No recognized third-party data-sharing services detected — This page does not appear to load external tracking, analytics, or advertising scripts. ### 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 (B — 70/100) *private* - **[PASS]** Cache-Control header is set - **[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]** HSTS max-age is short: 182 days — HSTS max-age should be at least 1 year (31536000 seconds). - **[INFO]** HSTS missing includeSubDomains — Without includeSubDomains, HSTS only protects the exact domain. --- ## Accessibility ### Landmark Structure (A+ — 100/100) *8 landmarks* - **[PASS]**
landmark present - **[PASS]** 1