# BeaverCheck Audit Report — https://xunlei.com **Date:** April 22, 2026 **URL:** https://xunlei.com **Overall Grade:** D (66/100) **Report:** https://beavercheck.com/results/13114580-e973-404a-b366-faefece8c29e ## 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]** 21 image-in-link without alt text — Accessibility > Alt Text Quality 5. **[CRITICAL]** 34 image(s) missing alt attribute — Accessibility > Alt Text Quality --- ## Lighthouse Scores | Category | Score | |----------|-------| | Performance | 47 | | Accessibility | 65 | | 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 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 53 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 (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 2 external resources have SRI* - **[WARNING]** External script from hm.baidu.com lacks integrity attribute — Without SRI, if this CDN is compromised, attackers could inject malicious code. - **[WARNING]** External script from hm.baidu.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 (D — 50/100) *DMARC: none* - **[WARNING]** DMARC policy is none — monitoring only — This only monitors, it doesn't block spoofed emails. Change to p=quarantine or p=reject. ### 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 — 39/100) *2.6 MB transferred, 46 requests* - **[WARNING]** Page weighs 3.9 MB (2.6 MB transferred) - **[WARNING]** Images are 1.6 MB — compress or use modern formats — Convert images to WebP/AVIF and resize to display dimensions to reduce transfer size. - **[WARNING]** JavaScript is 781 KB — consider code splitting or lazy loading — Large JavaScript bundles delay interactivity. Split code by route or defer non-critical scripts. - **[PASS]** 46 HTTP requests - **[INFO]** Estimated 0.54 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 (2.6 MiB of 2.6 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 — 70/100) *27 images, 0 KB saveable* - **[WARNING]** https://m.xunlei.com/main/m-banner.png is missing width/height — may cause layout shift — Set explicit width and height to prevent CLS. ### JS Execution Cost (D — 40/100) *2229ms total JS execution* - **[WARNING]** Unattributable: 599ms CPU time - **[WARNING]** https://m.xunlei.com/m/: 592ms CPU time - **[WARNING]** https://m.xunlei.com/js/app.8471c94b.js: 529ms CPU time - **[WARNING]** https://m.xunlei.com/js/vendor.7fe0b994.js: 259ms CPU time - **[INFO]** https://m.xunlei.com/js/chunk-common.18ae7111.js: 138ms CPU time - **[WARNING]** Third-party scripts: 2229ms (100% of total) ### Font Loading (A+ — 100/100) *1 fonts (125 KB)* - **[INFO]** 1 font(s) use font-display: swap (FOUT risk but functional) ### JS Bundles (F — 20/100) *6 scripts, 516 KB unused* - **[WARNING]** https://m.xunlei.com/js/chunk-common.18ae7111.js: 418 KB unused (94%) — Consider code splitting or tree shaking to reduce unused code. - **[WARNING]** https://m.xunlei.com/js/vendor.7fe0b994.js: 98 KB unused (59%) — Consider code splitting or tree shaking to reduce unused code. - **[INFO]** Total unused JavaScript: 516 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) *No optimization needed* - **[PASS]** No resource hint issues ### Page Weight Inventory (F — 35/100) *46 resources · 2.6 MB · 516 KB savings available* - **[WARNING]** Page weight 1.6 MB over 1MB target - **[INFO]** ~516 KB of savings available - **[WARNING]** 45 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 (B — 80/100) *98 links checked, 94 healthy, 4 broken* - **[CRITICAL]** 94 of 98 links are healthy - **[CRITICAL]** Broken link: https://ir.xunlei.com/ — Found in . Get "https://ir.xunlei.com/": context deadline exceeded - **[CRITICAL]** Broken link: https://beian.miit.gov.cn/ — Found in . Returns HTTP 521. - **[CRITICAL]** Broken link: https://www.12377.cn/ — Found in . Get "https://www.12377.cn/": context deadline exceeded - **[CRITICAL]** Broken link: https://www.beian.gov.cn/portal/registerSystemInfo?record... — Found in . Get "https://www.beian.gov.cn/portal/registerSystemInfo?recordcode=44030502001761": blocked: www.beian.gov.cn resolves to private/reserved IP 127.0.0.1 ### 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+ — 100/100) *4 A records, 172 ms lookup* - **[PASS]** Resolves to 4 IPv4 address(es) - **[PASS]** Has 2 IPv6 (AAAA) record(s) - **[PASS]** 5 nameserver(s) configured - **[PASS]** 3 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: 172 ms ### Redirect Chain (B — 70/100) *1 redirect(s), 3236 ms total* - **[PASS]** Single redirect - **[INFO]** WWW normalization redirect - **[WARNING]** Redirect overhead: 3236 ms total ### 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 (C — 65/100) *robots.txt present, sitemap with 0 URLs* - **[PASS]** robots.txt is present - **[PASS]** sitemap.xml is present - **[WARNING]** sitemap.xml contains invalid XML — Search engines may not be able to parse the sitemap. Fix XML validation errors. - **[WARNING]** sitemap.xml is empty — no URLs found — An empty sitemap provides no value. Add entries for your pages. - **[INFO]** robots.txt does not reference a sitemap — Add a 'Sitemap:' directive to robots.txt so search engines can discover your sitemap. ### URL Variants (C — 65/100) *www/non-www, trailing slash, HTTP→HTTPS* - **[CRITICAL]** Both www and non-www versions serve content - **[WARNING]** HTTP→HTTPS redirect uses 302 instead of 301 ### Domain Intelligence (A+ — 100/100) *xunlei.com — via Alibaba Cloud Computing (Beijing) Co., Ltd., 22 years, 7 months old, hosted on Alibaba Cloud* - **[PASS]** Domain registered until Jan 13, 2032 (5 years, 9 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: Alibaba Cloud Computing (Beijing) Co., Ltd. - **[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: Alibaba 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 (C — 60/100) *Viewport prevents zooming* - **[PASS]** Viewport meta tag is present - **[PASS]** width=device-width is set - **[CRITICAL]** Viewport prevents user zooming — user-scalable=no or maximum-scale < 2 prevents users from zooming. This is a WCAG 1.4.4 (Level AA) failure and an accessibility barrier for users with low vision. ### 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) *0 cookies · 1 trackers · 0 pre-consent* - **[INFO]** 1 third-party tracker(s) detected on page --- ## 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 (B — 80/100) *© 2003-2025 XUNLEI* - **[INFO]** Copyright year is 2025 (1 year(s) behind) — Copyright year is 2025 — 1 year(s) behind. While copyright protection doesn't depend on the year being current, an outdated notice may suggest the site is not actively maintained. Update to © 2026 or use a range like © 2025–2026. - **[PASS]** Copyright holder: XUNLEI ### 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 (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=86400 (1 day)* - **[PASS]** Cache-Control header is set - **[PASS]** Effective TTL: 1 day (max-age=86400) - **[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. --- ## Accessibility ### Landmark Structure (B — 70/100) *2 landmarks* - **[PASS]**
landmark present - **[WARNING]** No