# BeaverCheck Audit Report — https://www.erlang.org **Date:** April 7, 2026 **URL:** https://www.erlang.org **Overall Grade:** B (82/100) **Report:** https://beavercheck.com/results/311c09f0-7674-e852-1aca-e1b3fc7f68c2 ## Top Findings 1. **[CRITICAL]** Content-Security-Policy header is missing — Security > Security Headers 2. **[CRITICAL]** No Content-Security-Policy header found — Security > Content Security Policy 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 is missing includeSubDomains — Security > Security Headers --- ## Lighthouse Scores | Category | Score | |----------|-------| | Performance | 100 | | Accessibility | 100 | | Best Practices | 100 | | SEO | 100 | --- ## Security ### Security Headers (C — 55/100) *5 of 10 headers properly configured* - **[WARNING]** HSTS is missing includeSubDomains — Without includeSubDomains, subdomains can still be accessed over HTTP. - **[PASS]** X-Content-Type-Options is properly configured - **[PASS]** X-Frame-Options is properly configured - **[PASS]** Referrer-Policy is properly configured - **[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 33 days) - **[PASS]** Certificate chain has 2 certificates - **[PASS]** Certificate uses modern signature algorithm - **[PASS]** Certificate covers 4 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 (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 (F — 30/100) *No DMARC* - **[WARNING]** No DMARC record found — Without DMARC, email receivers have no policy for handling authentication failures. ### 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 (A+ — 100/100) *71 KB transferred, 11 requests* - **[PASS]** Page weighs 346 KB (71 KB transferred) - **[PASS]** 11 HTTP requests - **[INFO]** Estimated 0.01 g CO2 per page load ### Third-Party Impact (A+ — 100/100) *No third-party resources* - **[PASS]** No third-party resources detected ### Text Compression (A+ — 100/100) *All text resources are compressed* - **[PASS]** All text resources are compressed ### Image Optimization (B — 80/100) *4 images, 0 KB saveable* - **[WARNING]** https://www.erlang.org/assets/img/erlang-logo.svg is missing width/height — may cause layout shift — Set explicit width and height to prevent CLS. - **[WARNING]** https://www.erlang.org/assets/img/eef.png is missing width/height — may cause layout shift — Set explicit width and height to prevent CLS. ### JS Execution Cost (A+ — 100/100) *468ms total JS execution* - **[INFO]** https://www.erlang.org/: 189ms CPU time - **[INFO]** Unattributable: 180ms CPU time - **[INFO]** https://www.erlang.org/assets/js/prismjs/prism.js: 98ms CPU time - **[INFO]** Third-party scripts: 180ms (38% of total) ### Font Loading (A+ — 100/100) *No web fonts (system fonts)* - **[PASS]** No web fonts loaded — system fonts are fastest ### JS Bundles (A+ — 100/100) *3 scripts, 0 KB unused* ### 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) *No optimization needed* - **[PASS]** No resource hint issues ### 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 (A — 95/100) *28 links checked, 27 healthy, 1 broken* - **[WARNING]** 27 of 28 links are healthy - **[CRITICAL]** Broken link: http://www.twitter.com/erlang_org — Found in . Returns HTTP 520. ### Mixed Content (A+ — 100/100) *No mixed content detected — all resources use HTTPS.* - **[PASS]** No mixed content detected — all resources use HTTPS ### Open Graph (A+ — 100/100) *Open Graph tags are well configured for social sharing.* - **[INFO]** og:title is short (18 characters) — Ideal length is 25–60 characters for social sharing previews. - **[INFO]** og:description is short (52 characters) — Ideal length is 55–200 characters for social sharing previews. ### Structured Data (A+ — 100/100) *1 JSON-LD block(s) found — structured data is well configured.* - **[INFO]** Missing recommended property "description" for WebSite — Adding "description" can improve how search engines display your content. - **[INFO]** Missing recommended property "potentialAction" for WebSite — Adding "potentialAction" can improve how search engines display your content. --- ## Infrastructure ### DNS Records (B — 70/100) *2 A records, 2328 ms lookup* - **[PASS]** Resolves to 2 IPv4 address(es) - **[PASS]** Has 2 IPv6 (AAAA) record(s) - **[WARNING]** CNAME record at zone apex — A CNAME at the zone apex can break MX and NS records. Use ALIAS/ANAME or A records instead. - **[INFO]** No NS records found - **[INFO]** No MX records — email not configured via DNS - **[INFO]** CAA records not checked — CAA record lookup requires a specialized DNS resolver. This check will be available in a future update. - **[INFO]** No SPF record found in TXT records — SPF helps prevent email spoofing. Add a TXT record starting with 'v=spf1'. - **[WARNING]** DNS resolution is slow (2328 ms) — Slow DNS adds latency to every page load. Consider a faster DNS provider. ### Redirect Chain (A+ — 100/100) *No redirects — direct access* - **[PASS]** No redirects — direct access ### IPv6 Readiness (F — 30/100) *IPv6 records exist but unreachable* - **[WARNING]** IPv6 DNS records exist but server is not reachable — Having AAAA records but an unreachable server is worse than no AAAA — clients may experience delays before falling back to IPv4. - **[INFO]** IPv6 connection error ### Crawlability (B — 75/100) *no robots.txt, no sitemap* - **[INFO]** No robots.txt found — robots.txt is optional but recommended. It tells search engine crawlers which pages to index. - **[INFO]** No sitemap.xml found — A sitemap helps search engines discover and index your pages more efficiently. ### URL Variants (A+ — 100/100) *www/non-www, trailing slash, HTTP→HTTPS* - **[PASS]** www/non-www redirect configured correctly (preferred: www) - **[PASS]** HTTP correctly 301-redirects to HTTPS ### Domain Intelligence (A+ — 100/100) *erlang.org — via CSC Corporate Domains, Inc., 27 years, 10 months old, hosted on ERI-AS - Ericsson Inc., US* - **[PASS]** Domain registered until Oct 8, 2026 (6 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: CSC Corporate Domains, Inc. - **[PASS]** Hosting: ERI-AS - Ericsson Inc., US --- ## 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 (A+ — 100/100) *No third-party trackers detected* - **[PASS]** No third-party trackers detected --- ## Legal ### Legal Page Ecosystem (F — 0/100) *0 of 7 expected legal pages detected* - **[WARNING]** Privacy Policy not detected — No link matching common Privacy Policy URL patterns or link text was found. Most websites are expected to have a Privacy Policy, especially those collecting user data. - **[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. - **[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 *0 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]** No specific regulatory indicators detected — No strong signals for GDPR, CCPA, ADA, PCI, HIPAA, or COPPA were found. This does not mean these regulations don't apply — it means we didn't detect common technical indicators. ### 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 (B — 80/100) *Netlify* - **[PASS]** Site is served via Netlify CDN ### HTTP Caching (B — 75/100) *public,max-age=0,must-revalidate* - **[PASS]** Cache-Control header is set - **[PASS]** ETag present — enables conditional (304) responses ### Transport Security (A — 90/100) *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. - **[PASS]** HSTS enabled (base policy) - **[INFO]** HSTS missing includeSubDomains — Without includeSubDomains, HSTS only protects the exact domain. - **[PASS]** TLS 1.3 in use (fastest handshake, 1-RTT) --- ## Accessibility ### Landmark Structure (A — 85/100) *4 landmarks* - **[PASS]**
landmark present - **[PASS]** 1