# BeaverCheck Audit Report — https://bt.cn
**Date:** April 22, 2026
**URL:** https://bt.cn
**Overall Grade:** C (72/100)
**Report:** https://beavercheck.com/results/6fd99f1f-4e64-4816-8d31-7defcd551caf
## Top Findings
1. **[CRITICAL]** Content-Security-Policy header is missing — Security > Security Headers
2. **[CRITICAL]** Cookie 'server_name_session' is missing the Secure flag — Security > Cookie Security
3. **[CRITICAL]** No Content-Security-Policy header found — Security > Content Security Policy
4. **[CRITICAL]** Page weighs 5.1 MB (4.6 MB transferred) — Performance > Page Weight Budget
5. **[CRITICAL]** 1 button(s) with no accessible text — Accessibility > Link & Button Quality
---
## Lighthouse Scores
| Category | Score |
|----------|-------|
| Performance | 58 |
| Accessibility | 75 |
| Best Practices | 81 |
| SEO | 69 |
---
## Security
### Security Headers (D — 40/100)
*4 of 10 headers properly configured*
- **[PASS]** Strict-Transport-Security is properly configured
- **[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 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 117 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 (B — 80/100)
*1 cookies analyzed, 1 checks passed*
- **[CRITICAL]** Cookie 'server_name_session' is missing the Secure flag — Without the Secure flag, this cookie can be sent over unencrypted HTTP, exposing it to interception.
- **[PASS]** Cookie 'server_name_session' has the HttpOnly flag
- **[WARNING]** Cookie 'server_name_session' has no SameSite attribute — Without an explicit SameSite attribute, browser default behavior varies. Set SameSite=Lax or Strict.
---
## Advanced Security
### Subresource Integrity (F — 20/100)
*0 of 5 external resources have SRI*
- **[WARNING]** External script from scripts.clarity.ms lacks integrity attribute — Without SRI, if this CDN is compromised, attackers could inject malicious code.
- **[WARNING]** External script from www.clarity.ms 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.
- **[WARNING]** External script from bat.bing.com lacks integrity attribute — Without SRI, if this CDN is compromised, attackers could inject malicious code.
- **[WARNING]** External script from bat.bing.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)
*4.6 MB transferred, 52 requests*
- **[CRITICAL]** Page weighs 5.1 MB (4.6 MB transferred)
- **[WARNING]** Images are 4.3 MB — compress or use modern formats — Convert images to WebP/AVIF and resize to display dimensions to reduce transfer size.
- **[INFO]** 52 HTTP requests
- **[INFO]** Estimated 0.97 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 (4.6 MiB 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 (C — 60/100)
*26 images, 0 KB saveable*
- **[WARNING]** https://www.bt.cn/static/astro/images/home/step/pa... is missing width/height — may cause layout shift — Set explicit width and height to prevent CLS.
- **[WARNING]** https://www.bt.cn/static/astro/images/home/free-ic... is missing width/height — may cause layout shift — Set explicit width and height to prevent CLS.
- **[WARNING]** https://www.bt.cn/static/astro/images/trust/fuli.p... is missing width/height — may cause layout shift — Set explicit width and height to prevent CLS.
- **[WARNING]** https://www.bt.cn/static/astro/images/trust/xiehui... is missing width/height — may cause layout shift — Set explicit width and height to prevent CLS.
- **[WARNING]** https://www.bt.cn/static/astro/images/trust/yanjiu... is missing width/height — may cause layout shift — Set explicit width and height to prevent CLS.
- **[WARNING]** https://www.bt.cn/static/astro/images/home/step/co... is missing width/height — may cause layout shift — Set explicit width and height to prevent CLS.
- **[WARNING]** https://www.bt.cn/static/astro/images/home/step/do... is missing width/height — may cause layout shift — Set explicit width and height to prevent CLS.
- **[WARNING]** https://www.bt.cn/static/astro/images/trust/hunan.... is missing width/height — may cause layout shift — Set explicit width and height to prevent CLS.
### JS Execution Cost (F — 20/100)
*3801ms total JS execution*
- **[WARNING]** https://www.bt.cn/new/index.html: 2990ms CPU time
- **[WARNING]** Unattributable: 346ms CPU time
- **[WARNING]** https://scripts.clarity.ms/0.8.59/clarity.js: 284ms CPU time
- **[INFO]** https://hm.baidu.com/hm.js?6e78ef648057d9f2ab12dcc...: 64ms CPU time
- **[INFO]** https://bat.bing.com/bat.js?version=1776821593: 59ms CPU time
- **[WARNING]** Third-party scripts: 3801ms (100% of total)
### Font Loading (A+ — 100/100)
*1 fonts (111 KB)*
- **[INFO]** 1 font(s) use font-display: swap (FOUT risk but functional)
### JS Bundles (B — 80/100)
*14 scripts, 77 KB unused*
- **[WARNING]** https://www.bt.cn/static/astro/js/utils-vendor.js?...: 41 KB unused (69%) — Consider code splitting or tree shaking to reduce unused code.
- **[WARNING]** https://www.bt.cn/static/astro/js/vue-vendor.js?ve...: 35 KB unused (92%) — Consider code splitting or tree shaking to reduce unused code.
- **[INFO]** Total unused JavaScript: 77 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 (D — 45/100)
*52 resources · 4.6 MB · 77 KB savings available*
- **[WARNING]** Page weight 3.6 MB over 1MB target
- **[INFO]** ~77 KB of savings available
- **[WARNING]** 51 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)
*97 links checked, 93 healthy, 4 broken*
- **[CRITICAL]** 93 of 97 links are healthy
- **[WARNING]** Broken link: https://bt.cn/static/astro/images/home/banner-1/bt_video.gif — Found in ![]()
. Returns HTTP 404.
- **[CRITICAL]** Broken link: http://beian.miit.gov.cn — Found in . Returns HTTP 521.
- **[CRITICAL]** Broken link: http://www.beian.gov.cn/portal/registerSystemInfo?recordc... — Found in . Get "http://www.beian.gov.cn/portal/registerSystemInfo?recordcode=44190002003211": blocked: www.beian.gov.cn resolves to private/reserved IP 127.0.0.1
- **[CRITICAL]** Broken link: https://www.12377.cn — Found in . Get "https://www.12377.cn": 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 (A — 95/100)
*Open Graph tags are well configured for social sharing.*
- **[INFO]** Missing twitter:card — Without twitter:card, Twitter falls back to Open Graph tags. Adding it gives you more control.
### Structured Data (C — 75/100)
*1 JSON-LD block(s) found — some improvements recommended.*
- **[CRITICAL]** Malformed JSON-LD block #1 — JSON parse error: "Syntax error at index 1: invalid char\n\n\t{JSON.stringify({\n '@context': \n\t.^..............................\n"
---
## Infrastructure
### DNS Records (A+ — 95/100)
*1 A records, 40 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]** 2 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: 40 ms
### Redirect Chain (D — 50/100)
*2 redirect(s), 2391 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.
- **[WARNING]** Redirect overhead: 2391 ms total
### IPv6 Readiness (A+ — 100/100)
*IPv6 reachable (258 ms)*
- **[PASS]** IPv6 is configured and reachable at 2001:19f0:7001:54fc:5400:2ff:fe9b:97f9
### Crawlability (A+ — 95/100)
*robots.txt present, sitemap with 120 URLs*
- **[PASS]** robots.txt is present
- **[PASS]** sitemap.xml is present
- **[PASS]** sitemap.xml is valid XML
- **[PASS]** sitemap.xml contains 120 entries
- **[PASS]** Sitemap index with 120 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 — 90/100)
*www/non-www, trailing slash, HTTP→HTTPS*
- **[PASS]** www/non-www redirect configured correctly (preferred: non-www)
- **[WARNING]** HTTP→HTTPS redirect uses 302 instead of 301
### Domain Intelligence (A+ — 100/100)
*bt.cn — via 厦门易名科技股份有限公司, 12 years, 5 months old*
- **[PASS]** Domain registered until Jan 22, 2036 (9 years, 10 months remaining)
- **[PASS]** Registrar: 厦门易名科技股份有限公司
- **[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]** 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 (F — 30/100)
*4 trackers detected*
- **[INFO]** 4 third-party trackers detected — Found 3 analytics, 1 advertising, 0 marketing, 0 tag manager trackers.
- **[WARNING]** 1 advertising/retargeting trackers detected — Advertising trackers collect user data for ad targeting. Under GDPR, these typically require explicit consent.
- **[WARNING]** Trackers detected but no cookie policy found — This page loads 4 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.
- **[WARNING]** Session replay tool detected: Microsoft Clarity — Session replay tools record user interactions. These require clear disclosure and often explicit consent under GDPR.
### Cookie & Tracker Inventory (A+ — 100/100)
*1 cookies · 4 trackers · 0 pre-consent*
- **[INFO]** 1 cookie(s) could not be classified
- **[INFO]** 4 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 (A+ — 100/100)
*© 2026 宝塔面板 | 让运维安全高效（www*
- **[PASS]** Copyright notice is up to date — Copyright notice is up to date: © 2026 宝塔面板 | 让运维安全高效（www
- **[PASS]** Copyright holder: 宝塔面板 | 让运维安全高效（www
### 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 (F — 30/100)
*No cache headers*
- **[WARNING]** No Cache-Control header found — Browsers will use heuristic caching, which can be unpredictable. Set explicit cache headers.
### 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
- **[PASS]** TLS 1.3 in use (fastest handshake, 1-RTT)
---
## Accessibility
### Landmark Structure (A — 85/100)
*6 landmarks*
- **[PASS]** landmark present
- **[PASS]** 2