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Security report for imooc.com

慕课网 (IMOOC) · Education · China

Medium risk. 8 critical or high findings in Email security, Security headers and 2 other checks.

Security score

57/100

Risk levelMedium

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

慕课网 (IMOOC) is a prominent Chinese online IT education platform specializing in programming and technology skills development. It offers a wide range of courses covering popular technologies such as Java, Python, front-end development, big data, and AI. The platform targets IT professionals, students, and career changers seeking to enhance their technical skills and advance their careers. With a large user base and extensive course catalog, IMOOC holds a strong market position in China's online education sector. Technically, the website employs modern JavaScript libraries and analytics tools, ensuring a responsive and user-friendly experience across devices. Security posture is solid with HTTPS and some security headers, though privacy and cookie policies are not explicitly presented, indicating room for compliance improvement. The absence of WHOIS data reduces transparency but does not detract from the platform's legitimacy given its branding and market presence. Overall, IMOOC is a credible and professional educational service with moderate technical maturity and good security practices.

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

8 findings rated critical or high. Fix these first.

  1. Email security

    SPF, DKIM and DMARC stop others sending email that looks like it comes from your domain, a common route to phishing and invoice fraud.

    • Critical

      No email authentication configured

      Domain is vulnerable to email spoofing

      What to do: Implement SPF, DKIM, and DMARC immediately

  2. 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 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';…

  3. 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 imooc.com

This scan found 28 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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Recommended

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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
67
Security headers
25
Email security
40
DNS health
60
Network security
100
GDPR outside view
50
Average
57

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

IMOOC operates in the education sector, focusing on IT and programming skills training. Its business model combines free and paid courses, catering to individual learners and enterprises. The platform benefits from a strong brand, extensive course offerings, and a large active user base. Partnerships with its parent company Minsheng Education Group and enterprise service subdomains enhance its ecosystem. Revenue streams likely include course fees, enterprise contracts, and possibly advertising. The platform's competitive advantage lies in its comprehensive curriculum, industry-relevant content, and established reputation in China. Growth indicators include continuous course updates and new technology tracks such as AI and cloud computing. Strategic observations suggest focusing on enhancing privacy compliance and expanding international presence could further strengthen its market position.

Security posture

The website demonstrates a good security baseline with HTTPS enforced and several security-related HTTP headers present. No exposed sensitive data or vulnerable libraries were detected in the analyzed content. However, the lack of explicit privacy and cookie policies, as well as absence of a vulnerability disclosure or security.txt page, indicates gaps in compliance and incident response readiness. The platform uses multiple third-party analytics and advertising scripts, which may introduce privacy risks if not properly managed. Overall, the security posture is solid but could be improved by formalizing privacy compliance, adding clear security policies, and enhancing transparency around data protection and incident handling.

Recommendations

  1. Publish comprehensive privacy and cookie policies prominently on the website to improve GDPR and privacy compliance.
  2. Implement a cookie consent mechanism to inform users and obtain consent for tracking technologies.
  3. Create and maintain a vulnerability disclosure policy or security.txt file to facilitate responsible reporting of security issues.
  4. Enhance accessibility features to improve usability for all users, including those with disabilities.
  5. Add additional security headers such as Content Security Policy (CSP) to mitigate cross-site scripting and related attacks.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
慕课网 (IMOOC)
Description
慕课网（IMOOC）是IT技能学习平台。慕课网(IMOOC)课程涉及JAVA、前端、Python、大数据等60类主流技术语言，覆盖了面试就业、职业成长、自我提升等需求场景，帮助用户实现从技能提升到岗位提升的能力闭环。
Key services
Online IT courses, Career development, Skill enhancement, Enterprise services, Instructor onboarding
Content quality
good
Branding
consistent

Technology

Stack
jQuery 3.6.0, SeaJS, Swiper, SensorsData analytics, ZhugeIO analytics, Baidu analytics, Baidu advertising scripts
Platforms
Web
Performance
moderate
Mobile
good
Accessibility
basic
SEO
good

Security

Observed score
85/100
Good practices seen
  • HTTPS enforced (implied by https URLs)
  • No exposed sensitive data in HTML
  • No visible vulnerable libraries

Analytics and tracking

Services
Baidu Analytics, SensorsData, ZhugeIO
Tracking level
moderate
Privacy practices
basic

Advertising

Ad networks
Baidu Advertising
Tracking pixels
Baidu Analytics, SensorsData, ZhugeIO
Marketing tools
Baidu push.js, Baidu cpro
Transparency
basic

Site quality

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

Key observations

  1. Website is a professional Chinese IT education platform
  2. Content is rich with multiple course offerings and categories
  3. No visible contact emails or phone numbers on main page
  4. No explicit privacy or cookie policies found in provided HTML
  5. Uses multiple analytics and advertising scripts primarily from Baidu
  6. No security.txt or vulnerability disclosure information found
  7. WHOIS data unavailable, possibly due to privacy protection or query limitations
  8. Mobile optimization and SEO are well implemented
  9. No WAF or blocking detected
Technical notes

Notes

The website uses a modern front-end technology stack including jQuery 3.6.0, SeaJS module loader, and Swiper for UI components. Analytics are implemented via Baidu Analytics, SensorsData, and ZhugeIO, indicating a mature data collection infrastructure. The site is mobile-optimized with responsive design and alternate mobile URLs. Performance is moderate with some room for optimization. No CMS was explicitly detected, suggesting a custom or proprietary platform. Hosting provider details are not evident from the content. The site uses HTTPS consistently, contributing to secure communications. Technical risks are minimal but could include privacy risks from third-party scripts if not managed carefully.
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

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