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Security report for bilibili.com

哔哩哔哩 · Media · China

Medium risk. 7 critical or high findings in Security headers, GDPR outside view and 1 other check.

Security score

55/100

Risk levelMedium

0–100, higher is better. How it is calculated

哔哩哔哩 (bilibili.com) is a leading Chinese video sharing platform specializing in ACG (Anime, Comics, Games) content, offering a rich ecosystem including video streaming, live broadcasts, gaming, manga, and e-commerce services. It enjoys a strong market position with a large, active user base and a vibrant community of content creators. The platform is well-branded and professionally designed, targeting primarily young audiences interested in animation and gaming culture. Technically, the site employs modern web technologies such as Vue.js, ES2015+ JavaScript, and optimized image formats (WebP, AVIF), ensuring good performance and mobile responsiveness. However, the absence of visible privacy and cookie policies and the lack of WHOIS transparency slightly reduce its compliance and trust scores. Security posture is moderate with HTTPS enforced but missing explicit security headers and published policies. Overall, bilibili.com is a mature, reputable media platform with room for improvement in privacy compliance and security transparency.

Scanned

NIS2 and GDPR posture

GDPR outside view
50/ 100 · Medium
Checks completed
7of 7

NIS2 Art. 21(2)

  1. (a) Risk analysis and security policies: Not visible from outside
  2. (b) Incident handling: One indicator
  3. (c) Business continuity, backups and crisis management: Not visible from outside
  4. (d) Supply chain security: Not visible from outside
  5. (e) Secure acquisition, development and maintenance, including vulnerability handling: Partly checked
  6. (f) Assessing the effectiveness of security measures: Not visible from outside
  7. (g) Cyber hygiene and security training: Not visible from outside
  8. (h) Cryptography and encryption: Partly checked
  9. (i) HR security, access control and asset management: One indicator
  10. (j) Multi-factor authentication and secured communications: Not visible from outside

This scan rated NIS2 with an earlier keyword method that is no longer shown; rescan for the per-article view. Risk management, continuity, supply chain, training, MFA, management oversight (Art. 20) and incident reporting (Art. 23) need internal evidence, and Guard cannot tell whether NIS2 applies to this organisation.

GDPR is indicative only, based on publicly visible signals: Articles 7, 12, 13 and 32 of Regulation (EU) 2016/679 and Article 5(3) of the ePrivacy Directive. Not a certification or legal assessment.

Priority findings

7 findings rated critical or high. Fix these first.

  1. Security headers

    Security headers are instructions your web server sends to every visitor’s browser. Missing ones leave visitors more exposed to attacks such as clickjacking and injected scripts.

    • High

      Missing Strict-Transport-Security header

      Forces HTTPS connections

      What to do: Add "Strict-Transport-Security: max-age=31536000; includeSubDomains; preload"

      • CWE-319
      • OWASP A04:2025
      • ASVS V3.4.1
    • High

      Missing X-Frame-Options header

      Prevents clickjacking attacks

      What to do: Add "X-Frame-Options: DENY" or "X-Frame-Options: SAMEORIGIN"

    • High

      Missing Content-Security-Policy header

      Controls resources the browser is allowed to load

      What to do: Implement a Content-Security-Policy appropriate for your application

      • ASVS V3.4.3
      • OWASP Secure Headers: OWASP Secure Headers Project recommends Content-Security-Policy: default-src 'self'; form-action 'self'; base-uri 'self'; object-src 'none';…

  2. GDPR outside view

    These are the privacy signals visitors and data protection authorities look for under GDPR.

    • High

      No Privacy Policy found

      GDPR requires a clear and accessible privacy policy

      What to do: Add a comprehensive privacy policy page and link to it prominently

    • High

      No Cookie Policy found

      GDPR requires clear information about cookie usage

      What to do: Add a dedicated cookie policy explaining cookie usage and purposes

Need hands-on remediation? Email guard@offseq.com

Keep watching bilibili.com

This scan found 23 issues across 6 checks. Monitoring re-runs those checks daily, emails you when something material changes and records each fix, so you can show progress.

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  • TLS certificates and expiry
  • DNS records
  • SPF, DKIM and DMARC
  • Security headers
  • GDPR and NIS2 posture
  • Exposed services
  • Third-party trackers
  • Security score drift

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Results by check

Each check with its score, findings and the evidence it collected.

How this score is calculated

The security score runs 0–100, higher is better. It is the plain average of the security checks that completed in this scan, each counted equally. A check that could not run is left out: it counts neither as a pass nor as a fail.

Counted in this score

SSL/TLS
72
Security headers
15
Email security
70
DNS health
85
Network security
40
GDPR outside view
50
Average
55

Not counted

  • NIS2 outside view: Re-weights evidence from the TLS, email, DNS, network and hygiene checks, so counting it would count that evidence twice. Shown on its own.
  • OffSeq Observations: An AI reading of the site, useful context but not reproducible evidence. Shown on its own.

Findings that cap the score at 49

Each of these is serious on its own, so while any is present the site cannot rate better than high risk, however good the other checks are.

  • The certificate is not trusted by browsers
  • The website is not served over HTTPS
  • A database, remote desktop, file-sharing or Telnet service is reachable from the internet
  • The page loads a script from a compromised source
  • The domain registration has expired
  • SPF authorises every server to send mail as the domain

Partial scans

When the site blocks Guard or most checks cannot run, the score covers only the checks that ran (usually DNS and email), is capped at 75 and is shown as partial, without a risk level.

Risk levels

  • Critical0–25
  • High26–49
  • Medium50–75
  • Low76–100

Technical appendix

Business context, site observations and technical notes gathered during the scan, and the standards behind each reference.

Business context

Business profile

Bilibili operates as an essential media entity in China’s digital entertainment sector, leveraging a content-driven business model with diversified revenue streams including memberships, live streaming, e-commerce, and advertising. Its competitive advantage lies in its strong community engagement, unique bullet comment (danmaku) feature, and broad content categories. The platform targets ACG enthusiasts and younger demographics, maintaining growth through continuous content innovation and partnerships. The ecosystem includes multiple subdomains for specialized services, indicating a well-integrated service portfolio. Despite its scale, the lack of publicly accessible WHOIS data and privacy documentation suggests potential regulatory or operational opacity, which should be addressed to enhance stakeholder confidence.

Security posture

The website demonstrates a baseline security posture with enforced HTTPS and no visible exposure of sensitive data in the HTML content. However, the absence of key security headers such as Content-Security-Policy, X-Frame-Options, and X-Content-Type-Options indicates potential areas for hardening against common web attacks. No vulnerability disclosures or incident response contacts are published, which limits transparency and readiness perception. Privacy compliance is weak due to missing privacy and cookie policies and lack of consent mechanisms. Overall, while no critical vulnerabilities are evident, the security maturity can be significantly improved by adopting best practices and publishing relevant policies.

Recommendations

  1. Publish comprehensive privacy and cookie policies with clear GDPR compliance and consent mechanisms.
  2. Implement and enforce security headers including Content-Security-Policy, X-Frame-Options, and X-Content-Type-Options.
  3. Provide visible incident response and vulnerability disclosure contacts to improve transparency and trust.
  4. Enhance accessibility features to meet compliance standards and improve user experience for all users.
  5. Increase WHOIS transparency or provide verified domain registration information to strengthen legitimacy.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
哔哩哔哩
Description
哔哩哔哩（bilibili.com)是国内知名的视频弹幕网站，这里有及时的动漫新番，活跃的ACG氛围，有创意的Up主。大家可以在这里找到许多欢乐。
Key services
视频弹幕播放, 动漫新番更新, 直播服务, 游戏中心, 会员购, 漫画, 赛事, 创作投稿
Content quality
excellent
Branding
consistent

Technology

Stack
JavaScript ES2015+, Vite (build tool), SVG icons, CSS3, WebP and AVIF images, DNS prefetch
Platforms
PC Web, Mobile Web (redirect to m.bilibili.com)
Performance
fast
Mobile
good
Accessibility
basic
SEO
good

Security

Observed score
75/100
Good practices seen
  • HTTPS enforced (implied by canonical URL https://www.bilibili.com/)
  • No visible exposed sensitive data in HTML

Analytics and tracking

Services
custom internal reporting (log-reporter.js)
Tracking level
moderate
Privacy practices
poor

Advertising

Marketing tools
kv-sdk
Transparency
basic

Site quality

Design
excellent
User experience
excellent
Content relevance
excellent
Navigation
excellent
Professionalism
excellent
Trustworthiness
high

Key observations

  1. Website is a major Chinese video sharing and streaming platform focused on ACG content.
  2. Content is rich and professionally presented with multiple service offerings.
  3. No direct contact or privacy policy links found in the provided HTML snippet.
  4. WHOIS data is unavailable, possibly due to privacy protection or query limitations.
  5. No signs of WAF or content blocking detected.
  6. External links mostly point to subdomains of bilibili.com and related services.
  7. One external domain (macchiatotech.com) appears unrelated and suspicious.
  8. No email addresses or phone numbers explicitly found in the HTML snippet.
  9. No social media links explicitly found in the snippet.
  10. Site uses modern web technologies and responsive design.
Technical notes

Notes

The website uses a modern front-end stack with Vue.js framework, ES2015+ JavaScript features, and optimized image formats for performance. The build process involves Vite, indicating a contemporary development environment. The site is responsive and optimized for both PC and mobile platforms, with DNS prefetching and modular JavaScript loading to enhance speed. However, no CMS or hosting provider details are evident from the HTML. The technical implementation is robust, but there is room for improvement in accessibility and security header implementation to reduce technical risks.
Standards and sources

Reference chips under each finding point to the standard, regulation or specification the finding relates to. They are taken from the official datasets below and mapped conservatively: a finding with no defensible link shows none. NIS2 and GDPR references mark where a finding is relevant evidence, not a compliance verdict. Implementing Regulation (EU) 2024/2690 binds digital infrastructure and digital service providers; for other entities it is the most detailed public reading of the Article 21 measures. WCAG, EN 301 549, European Accessibility Act and Web Accessibility Directive references name the requirement an automated accessibility rule relates to; they are not a conformance verdict.

Retrieved 2026-10-25

Earlier scans of this domain

  1. 55/100 −1Medium31 findingsView report
  2. 56/100Medium30 findingsView report
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