# BeaverCheck Audit Report — https://hackmd.io **Date:** April 22, 2026 **URL:** https://hackmd.io **Overall Grade:** C (78/100) **Report:** https://beavercheck.com/results/aeffe6bf-0530-4084-9dae-2451f2e919a7 ## Top Findings 1. **[CRITICAL]** Content-Security-Policy header is missing — Security > Security Headers 2. **[CRITICAL]** Cookie 'NEXT_LOCALE' is missing the Secure flag — Security > Cookie Security 3. **[CRITICAL]** No Content-Security-Policy header found — Security > Content Security Policy 4. **[CRITICAL]** Page weighs 5.2 MB (4.6 MB transferred) — Performance > Page Weight Budget 5. **[CRITICAL]** 4 link(s) with no accessible text — Accessibility > Link & Button Quality --- ## Lighthouse Scores | Category | Score | |----------|-------| | Performance | 57 | | Accessibility | 82 | | Best Practices | 96 | | SEO | 85 | --- ## Security ### Security Headers (C — 55/100) *5 of 10 headers properly configured* - **[PASS]** Strict-Transport-Security is properly configured - **[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. - **[WARNING]** X-Powered-By header reveals technology stack — This header discloses server technology (e.g. Express, PHP), helping attackers target known vulnerabilities. Remove it. - **[PASS]** Server header is not present ### 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 1.2, 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 286 days) - **[PASS]** Certificate chain has 3 certificates - **[PASS]** Certificate uses modern signature algorithm - **[PASS]** Certificate covers 2 domain(s) - **[PASS]** Certificate is issued by a trusted CA ### Cookie Security (C — 55/100) *4 cookies analyzed, 5 checks passed* - **[PASS]** Cookie '_csrf' has the Secure flag - **[WARNING]** Cookie '_csrf' is missing the HttpOnly flag — Without HttpOnly, this cookie can be accessed by JavaScript, making it vulnerable to XSS-based theft. - **[WARNING]** Cookie '_csrf' has no SameSite attribute — Without an explicit SameSite attribute, browser default behavior varies. Set SameSite=Lax or Strict. - **[PASS]** Cookie 'locale' has the Secure flag - **[WARNING]** Cookie 'locale' is missing the HttpOnly flag — Without HttpOnly, this cookie can be accessed by JavaScript, making it vulnerable to XSS-based theft. - **[WARNING]** Cookie 'locale' has no SameSite attribute — Without an explicit SameSite attribute, browser default behavior varies. Set SameSite=Lax or Strict. - **[CRITICAL]** Cookie 'NEXT_LOCALE' is missing the Secure flag — Without the Secure flag, this cookie can be sent over unencrypted HTTP, exposing it to interception. - **[WARNING]** Cookie 'NEXT_LOCALE' is missing the HttpOnly flag — Without HttpOnly, this cookie can be accessed by JavaScript, making it vulnerable to XSS-based theft. - **[PASS]** Cookie 'NEXT_LOCALE' has SameSite=Lax - **[PASS]** Cookie 'connect.sid' has the Secure flag - **[PASS]** Cookie 'connect.sid' has the HttpOnly flag - **[WARNING]** Cookie 'connect.sid' 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 — 85/100) *Potential exposures found* - **[WARNING]** /phpinfo.php is publicly accessible — Debug or admin endpoint is accessible. This may expose server internals or provide attack vectors. - **[INFO]** No security.txt found — Consider adding a security.txt at /.well-known/security.txt. ### Email Security (A+ — 100/100) *DMARC: reject* - **[PASS]** DMARC policy is reject — strongest 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) *4.6 MB transferred, 67 requests* - **[CRITICAL]** Page weighs 5.2 MB (4.6 MB transferred) - **[WARNING]** Images are 3.4 MB — compress or use modern formats — Convert images to WebP/AVIF and resize to display dimensions to reduce transfer size. - **[INFO]** 67 HTTP requests - **[INFO]** Estimated 0.96 g CO2 per page load ### Third-Party Impact (A+ — 100/100) *0% third-party, 0 ms blocking* - **[INFO]** Third-party code accounts for 0% of page weight (2.4 KiB of 4.6 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 (B — 75/100) *38 images, 0 KB saveable* - **[PASS]** All images are well-optimized ### JS Execution Cost (D — 40/100) *3208ms total JS execution* - **[WARNING]** https://hackmd.io/: 1848ms CPU time - **[WARNING]** https://hackmd.io/_next/static/chunks/bf9c1cba9711...: 823ms CPU time - **[WARNING]** Unattributable: 537ms CPU time - **[INFO]** Third-party scripts: 537ms (17% of total) ### Font Loading (A+ — 100/100) *5 fonts (156 KB)* - **[INFO]** 5 font(s) use font-display: swap (FOUT risk but functional) ### JS Bundles (A+ — 100/100) *13 scripts, 25 KB unused* - **[WARNING]** https://hackmd.io/_next/static/chunks/bf9c1cba9711...: 25 KB unused (38%) — Consider code splitting or tree shaking to reduce unused code. - **[INFO]** Total unused JavaScript: 25 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) *27 hints, 0 missing preconnects* - **[PASS]** Page uses 27 resource hint(s) ### Page Weight Inventory (C — 60/100) *67 resources · 4.6 MB · 25 KB savings available* - **[WARNING]** Page weight 3.6 MB over 1MB target - **[INFO]** 2 third-party resources (0% of weight) - **[INFO]** 9 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 (A — 95/100) *104 links checked, 103 healthy, 1 broken* - **[WARNING]** 103 of 104 links are healthy - **[CRITICAL]** Broken link: https://hackmd.io/join?signup-event=HomeSignupCompleted — Found in . Returns HTTP 405. ### Mixed Content (A+ — 100/100) *No mixed content detected — all resources use HTTPS.* - **[PASS]** No mixed content detected — all resources use HTTPS ### Open Graph (B — 85/100) *Open Graph tags are partially configured — some improvements recommended.* - **[INFO]** og:title is long (67 characters) — Titles over 60 characters may be truncated in social sharing previews. - **[INFO]** Missing og:url — The og:url tag specifies the canonical URL for the shared content. - **[INFO]** Missing og:type — The og:type tag helps social platforms categorize the 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.* --- ## Infrastructure ### DNS Records (A+ — 100/100) *2 A records, 29 ms lookup* - **[PASS]** Resolves to 2 IPv4 address(es) - **[PASS]** Has 3 IPv6 (AAAA) record(s) - **[PASS]** 4 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: 29 ms ### Redirect Chain (A+ — 100/100) *No redirects — direct access* - **[PASS]** No redirects — direct access ### IPv6 Readiness (A+ — 100/100) *IPv6 reachable (224 ms)* - **[PASS]** IPv6 is configured and reachable at 2406:da14:88d:a102:2226:ba9a:7be5:cedc, 2406:da14:88d:a101:c8d3:407a:7783:9dba, 2406:da14:88d:a100:de55:c641:f047:affa ### Crawlability (A+ — 95/100) *robots.txt present, sitemap with 13 URLs* - **[PASS]** robots.txt is present - **[PASS]** sitemap.xml is present - **[PASS]** sitemap.xml is valid XML - **[PASS]** sitemap.xml contains 13 entries - **[PASS]** Sitemap index with 13 child sitemaps - **[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) *hackmd.io — via Gandi SAS, 11 years, 1 months old* - **[PASS]** Domain registered until Apr 20, 2027 (1 years remaining) - **[PASS]** Registrar: Gandi SAS - **[PASS]** Registrar lock is enabled — Domain cannot be transferred without explicit unlock from the registrar. This protects against unauthorized 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]** 4 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+ — 100/100) *Lang attribute + Content-Language header* - **[PASS]** attribute is present - **[PASS]** value is valid - **[PASS]** Content-Language header is set - **[PASS]** Language signals are consistent ### 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) *3 trackers detected* - **[INFO]** 3 third-party trackers detected — Found 3 analytics, 0 advertising, 0 marketing, 0 tag manager trackers. - **[WARNING]** Trackers detected but no cookie policy found — This page loads 3 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 — 92/100) *4 cookies · 3 trackers · 1 pre-consent* - **[CRITICAL]** 1 tracking cookie(s) set before consent interaction — Under GDPR ePrivacy Art. 5(3), analytics and advertising cookies require explicit opt-in. These cookies appeared in the server response without any consent step — a likely violation. - **[INFO]** 3 third-party tracker(s) detected on page --- ## Legal ### Legal Page Ecosystem (F — 35/100) *1 of 7 expected legal pages detected* - **[PASS]** Privacy Policy detected — Found at https://hackmd.io/s/privacy/?utm_source=home&utm_medium=footer, linked from footer. - **[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 (A+ — 100/100) *© 2026 HackMD* - **[PASS]** Copyright notice is up to date — Copyright notice is up to date: © 2026 HackMD - **[PASS]** Copyright holder: HackMD ### Regulatory Indicators *1 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 (moderate confidence) — Indicators suggesting GDPR may be relevant: Privacy policy page found. EU General Data Protection Regulation — governs collection and processing of personal data of EU residents. ### 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 (D — 40/100) *no-store (uncacheable)* - **[INFO]** Cache-Control: no-store prevents all caching — Intentional for dynamic content, but increases server load for every page view. - **[INFO]** No ETag or Last-Modified header — Conditional requests (304 Not Modified) are not possible without validators. ### 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 (includeSubDomains, preload) - **[PASS]** HSTS preload enabled --- ## Accessibility ### Landmark Structure (B — 80/100) *3 landmarks* - **[PASS]**
landmark present - **[PASS]** 1