# BeaverCheck Audit Report — https://oschina.net
**Date:** April 22, 2026
**URL:** https://oschina.net
**Overall Grade:** D (65/100)
**Report:** https://beavercheck.com/results/d6c84931-6a8b-433e-89b6-00f4537d381d
## Top Findings
1. **[CRITICAL]** Content-Security-Policy header is missing — Security > Security Headers
2. **[CRITICAL]** Cookie 'BEC' is missing the Secure flag — Security > Cookie Security
3. **[CRITICAL]** No Content-Security-Policy header found — Security > Content Security Policy
4. **[CRITICAL]** Page weighs 12.1 MB (6.7 MB transferred) — Performance > Page Weight Budget
5. **[CRITICAL]** 32 link(s) with no accessible text — Accessibility > Link & Button Quality
---
## Lighthouse Scores
| Category | Score |
|----------|-------|
| Performance | 28 |
| Accessibility | 87 |
| Best Practices | 77 |
| SEO | 85 |
---
## Security
### Security Headers (F — 25/100)
*2 of 10 headers properly configured*
- **[WARNING]** HSTS max-age is too short (15552000s, should be ≥ 31536000s) — A short max-age leaves a window for downgrade attacks. Set max-age to at least 31536000 (1 year).
- **[PASS]** X-Content-Type-Options is properly configured
- **[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
- **[WARNING]** Server header reveals version information — The Server header discloses the software version, aiding attackers in targeting known vulnerabilities. Remove the version number.
### 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 50 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 (B — 75/100)
*1 cookies analyzed, 0 checks passed*
- **[CRITICAL]** Cookie 'BEC' is missing the Secure flag — Without the Secure flag, this cookie can be sent over unencrypted HTTP, exposing it to interception.
- **[WARNING]** Cookie 'BEC' is missing the HttpOnly flag — Without HttpOnly, this cookie can be accessed by JavaScript, making it vulnerable to XSS-based theft.
- **[WARNING]** Cookie 'BEC' 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 29 external resources have SRI*
- **[WARNING]** External script from hmcdn.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.
- **[WARNING]** External script from zz.bdstatic.com lacks integrity attribute — Without SRI, if this CDN is compromised, attackers could inject malicious code.
- **[WARNING]** External script from static.oschina.net lacks integrity attribute — Without SRI, if this CDN is compromised, attackers could inject malicious code.
- **[WARNING]** External script from www.yunpian.com lacks integrity attribute — Without SRI, if this CDN is compromised, attackers could inject malicious code.
- **[WARNING]** External script from static.oschina.net lacks integrity attribute — Without SRI, if this CDN is compromised, attackers could inject malicious code.
- **[WARNING]** External link from static.oschina.net lacks integrity attribute — Without SRI, if this CDN is compromised, attackers could inject malicious code.
- **[WARNING]** External link from static.oschina.net lacks integrity attribute — Without SRI, if this CDN is compromised, attackers could inject malicious code.
- **[WARNING]** External link from static.oschina.net lacks integrity attribute — Without SRI, if this CDN is compromised, attackers could inject malicious code.
- **[WARNING]** External link from static.oschina.net lacks integrity attribute — Without SRI, if this CDN is compromised, attackers could inject malicious code.
- **[WARNING]** External link from static.oschina.net lacks integrity attribute — Without SRI, if this CDN is compromised, attackers could inject malicious code.
- **[WARNING]** External link from static.oschina.net lacks integrity attribute — Without SRI, if this CDN is compromised, attackers could inject malicious code.
- **[WARNING]** External link from static.oschina.net lacks integrity attribute — Without SRI, if this CDN is compromised, attackers could inject malicious code.
- **[WARNING]** External link from static.oschina.net lacks integrity attribute — Without SRI, if this CDN is compromised, attackers could inject malicious code.
- **[WARNING]** External link from static.oschina.net lacks integrity attribute — Without SRI, if this CDN is compromised, attackers could inject malicious code.
- **[WARNING]** External link from static.oschina.net lacks integrity attribute — Without SRI, if this CDN is compromised, attackers could inject malicious code.
- **[WARNING]** External link from static.oschina.net lacks integrity attribute — Without SRI, if this CDN is compromised, attackers could inject malicious code.
- **[WARNING]** External link from static.oschina.net lacks integrity attribute — Without SRI, if this CDN is compromised, attackers could inject malicious code.
- **[WARNING]** External link from static.oschina.net lacks integrity attribute — Without SRI, if this CDN is compromised, attackers could inject malicious code.
- **[WARNING]** External link from static.oschina.net lacks integrity attribute — Without SRI, if this CDN is compromised, attackers could inject malicious code.
- **[WARNING]** External link from static.oschina.net lacks integrity attribute — Without SRI, if this CDN is compromised, attackers could inject malicious code.
- **[WARNING]** External link from static.oschina.net lacks integrity attribute — Without SRI, if this CDN is compromised, attackers could inject malicious code.
- **[WARNING]** External link from static.oschina.net lacks integrity attribute — Without SRI, if this CDN is compromised, attackers could inject malicious code.
- **[WARNING]** External link from static.oschina.net lacks integrity attribute — Without SRI, if this CDN is compromised, attackers could inject malicious code.
- **[WARNING]** External link from static.oschina.net lacks integrity attribute — Without SRI, if this CDN is compromised, attackers could inject malicious code.
- **[WARNING]** External link from static.oschina.net lacks integrity attribute — Without SRI, if this CDN is compromised, attackers could inject malicious code.
- **[WARNING]** External link from static.oschina.net lacks integrity attribute — Without SRI, if this CDN is compromised, attackers could inject malicious code.
- **[WARNING]** External link from static.oschina.net lacks integrity attribute — Without SRI, if this CDN is compromised, attackers could inject malicious code.
- **[WARNING]** External link from static.oschina.net 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 (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 (F — 0/100)
*6.7 MB transferred, 234 requests*
- **[CRITICAL]** Page weighs 12.1 MB (6.7 MB transferred)
- **[WARNING]** Images are 4.8 MB — compress or use modern formats — Convert images to WebP/AVIF and resize to display dimensions to reduce transfer size.
- **[WARNING]** JavaScript is 1.6 MB — consider code splitting or lazy loading — Large JavaScript bundles delay interactivity. Split code by route or defer non-critical scripts.
- **[WARNING]** 234 HTTP requests — consider bundling or reducing — Each request adds latency. Bundle small files, use sprites, or eliminate unnecessary requests.
- **[INFO]** Estimated 1.4 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 (6.7 MiB of 6.7 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)
*132 images, 0 KB saveable*
- **[PASS]** All images are well-optimized
### JS Execution Cost (F — 20/100)
*7554ms total JS execution*
- **[WARNING]** https://static.oschina.net/oschina/web/v2/js/vendo...: 3671ms CPU time
- **[WARNING]** https://static.oschina.net/oschina/web/v2/js/vendo...: 1408ms CPU time
- **[WARNING]** https://www.oschina.net/: 1274ms CPU time
- **[WARNING]** Unattributable: 1050ms CPU time
- **[INFO]** https://hm.baidu.com/hm.js?a411c4d1664dd70048ee98a...: 76ms CPU time
- **[WARNING]** Third-party scripts: 7554ms (100% of total)
### Font Loading (A+ — 100/100)
*No web fonts (system fonts)*
- **[PASS]** No web fonts loaded — system fonts are fastest
### JS Bundles (F — 20/100)
*33 scripts, 647 KB unused*
- **[WARNING]** https://static.oschina.net/oschina/web/v2/js/vendo...: 358 KB unused (55%) — Consider code splitting or tree shaking to reduce unused code.
- **[WARNING]** https://static.oschina.net/oschina/web/v2/js/vendo...: 225 KB unused (67%) — Consider code splitting or tree shaking to reduce unused code.
- **[WARNING]** https://www.yunpian.com/static/official/js/libs/ri...: 42 KB unused (71%) — Consider code splitting or tree shaking to reduce unused code.
- **[WARNING]** https://static.oschina.net/oschina/web/v2/js/vendo...: 22 KB unused (66%) — Consider code splitting or tree shaking to reduce unused code.
- **[INFO]** Total unused JavaScript: 647 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)
*7 hints, 0 missing preconnects*
- **[PASS]** Page uses 7 resource hint(s)
### Page Weight Inventory (F — 30/100)
*234 resources · 6.7 MB · 647 KB savings available*
- **[WARNING]** Page weight 5.7 MB over 1MB target
- **[INFO]** ~647 KB of savings available
- **[WARNING]** 233 third-party resources (100% of weight)
- **[INFO]** 5 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, 187 healthy, 13 broken*
- **[CRITICAL]** 187 of 200 links are healthy
- **[WARNING]** Broken link: https://api.osc.cool — Found in . Returns HTTP 404.
- **[WARNING]** Broken link: https://apiv1.oschina.net — Found in . Returns HTTP 404.
- **[CRITICAL]** Broken link: https://gitee.com/explore — Found in . Returns HTTP 405.
- **[WARNING]** Broken link: https://static.oschina.net/oschina/web/v2/js/undefined — Found in ![]()
. Returns HTTP 404.
- **[CRITICAL]** Broken link: https://tool.oschina.net/ — Found in . Get "https://tool.oschina.net/": context deadline exceeded
- **[CRITICAL]** Broken link: https://tool.oschina.net/hexconvert/ — Found in . Get "https://tool.oschina.net/hexconvert/": context deadline exceeded
- **[CRITICAL]** Broken link: https://tool.oschina.net/regex/ — Found in . Get "https://tool.oschina.net/regex/": context deadline exceeded
- **[CRITICAL]** Broken link: https://tool.oschina.net/codeformat/html/ — Found in . Get "https://tool.oschina.net/codeformat/html/": context deadline exceeded
- **[CRITICAL]** Broken link: https://tool.oschina.net/encrypt/ — Found in . Get "https://tool.oschina.net/encrypt/": context deadline exceeded
- **[CRITICAL]** Broken link: https://tool.oschina.net/diff/ — Found in . Get "https://tool.oschina.net/diff/": context deadline exceeded
- **[CRITICAL]** Broken link: https://tool.oschina.net/qr/ — Found in . Get "https://tool.oschina.net/qr/": context deadline exceeded
- **[CRITICAL]** Broken link: https://tool.oschina.net/commons?type=3 — Found in . Get "https://tool.oschina.net/commons?type=3": context deadline exceeded
- **[CRITICAL]** Broken link: https://tool.oschina.net — Found in . Get "https://tool.oschina.net": 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 (B — 75/100)
*1 A records, 647 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.
- **[INFO]** No IPv6 (AAAA) records
- **[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.
- **[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
- **[WARNING]** DNS resolution is slow (647 ms) — Slow DNS adds latency to every page load. Consider a faster DNS provider.
### Redirect Chain (B — 70/100)
*1 redirect(s), 3788 ms total*
- **[PASS]** Single redirect
- **[INFO]** WWW normalization redirect
- **[WARNING]** Redirect overhead: 3788 ms total
### IPv6 Readiness (C — 60/100)
*No IPv6 support*
- **[INFO]** No IPv6 (AAAA) records found — IPv6 support is increasingly important for global accessibility. About 40% of internet users have IPv6 connectivity.
### Crawlability (A+ — 100/100)
*robots.txt present, sitemap with 500 URLs*
- **[PASS]** robots.txt is present
- **[PASS]** sitemap.xml is present
- **[PASS]** sitemap.xml is valid XML
- **[PASS]** sitemap.xml contains 500 entries
- **[PASS]** robots.txt references sitemap
### URL Variants (B — 75/100)
*www/non-www, trailing slash, HTTP→HTTPS*
- **[CRITICAL]** Both www and non-www versions serve content
- **[PASS]** HTTP correctly 301-redirects to HTTPS
### Domain Intelligence (A+ — 100/100)
*oschina.net — via Alibaba Cloud Computing (Beijing) Co., Ltd., 17 years, 11 months old, hosted on CHINATELECOM-SHANDONG-JINAN-IDC Jinan,250000, CN*
- **[PASS]** Domain registered until Aug 16, 2027 (1 years, 4 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: CHINATELECOM-SHANDONG-JINAN-IDC Jinan,250000, CN
---
## 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 (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
*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]** HIPAA indicators detected (weak confidence) — Indicators suggesting HIPAA may be relevant: Text mentions: phi. Health Insurance Portability and Accountability Act — protects sensitive patient health information.
### 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 (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: 180 days — HSTS max-age should be at least 1 year (31536000 seconds).
- **[PASS]** TLS 1.3 in use (fastest handshake, 1-RTT)
---
## Accessibility
### Landmark Structure (C — 65/100)
*7 landmarks*
- **[PASS]** landmark present
- **[WARNING]** Multiple landmarks (3 found) — A page should have only one landmark.
- **[WARNING]** No