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Security report for acc5.com

深圳快学教育发展有限公司 · 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

The website www.acc5.com operates as a comprehensive Chinese accounting education platform under Shenzhen Kuai Xue Education Development Co., Ltd. It offers a wide range of accounting training services including practical accounting, certification exam preparation for junior and intermediate accounting titles, CPA, CMA, and tax professional courses. The platform supports over 3 million online learners and provides live streaming, Q&A, and specialized training camps, positioning itself as a leading player in the Chinese accounting education market. Technically, the site is built using modern web technologies including Nuxt.js for server-side rendering, jQuery, Bootstrap, and integrates Tencent's TCaptcha for bot protection. The site is mobile-optimized and performs moderately well, with good SEO practices and a consistent branding experience. However, some security best practices such as security headers and cookie consent mechanisms are missing. From a security perspective, the site uses HTTPS and captcha protection but lacks certain HTTP security headers and a cookie consent mechanism, which could be improved to enhance privacy compliance and security posture. The absence of WHOIS registration data reduces domain trust slightly, but the presence of multiple authoritative certifications and a professional business presence mitigates this concern. Overall, www.acc5.com is a professional and trustworthy educational platform with strong market presence and content quality. Strategic improvements in security headers, privacy compliance, and domain registration transparency are recommended to further strengthen its security and trustworthiness.

Scanned

This is an earlier scan of acc5.com. View the latest report

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 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';…

  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 acc5.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.

Daily monitoring

Recommended

€25per month

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

Email alerts on material changes and an exportable JSON history of every change.

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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

The company targets accounting students and professionals seeking certification and practical skills in accounting and taxation. Its business model is primarily online education with course sales and membership subscriptions. The platform's extensive course catalog, live sessions, and Q&A support create a competitive advantage. Partnerships with financial software providers and multiple subdomains for specialized training indicate a diversified service ecosystem. The company demonstrates growth potential with a large user base and recognized certifications, though domain registration opacity warrants monitoring.

Security posture

The website demonstrates a moderate security maturity level with HTTPS and bot protection via Tencent TCaptcha. However, it lacks critical HTTP security headers such as Content-Security-Policy, X-Frame-Options, and HSTS, which are recommended to prevent common web attacks. No incident response or vulnerability disclosure information is publicly available. Privacy compliance is partial, with no cookie consent mechanism detected. No exposed sensitive data or vulnerable libraries were found in the HTML content. Overall, the security posture is adequate but can be improved to meet higher standards.

Recommendations

  1. Implement comprehensive HTTP security headers including Content-Security-Policy, X-Frame-Options, X-Content-Type-Options, and HSTS.
  2. Add a cookie consent banner and mechanism to comply with GDPR and other privacy regulations.
  3. Publish a clear security policy and incident response contact information to enhance transparency and trust.
  4. Improve WHOIS domain registration transparency or monitor for changes to reduce trust concerns.
  5. Enhance accessibility features to improve compliance and user experience for all users.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
深圳快学教育发展有限公司
Description
会计学堂是一家专注于会计培训的教育机构,课程涵盖实操和各类会计考证,包括会计实操和税务实操以及初中级会计职称、CPA、CMA等各类会计考证课程。是一家以技术和产品驱动的创新性教育培训机构,在线学员超过300万人次。学会计,就上会计学堂。
Key services
会计实操培训, 初级会计职称考试培训, 中级会计职称考试培训, 注册会计师(CPA)培训, 税务师培训, CMA培训, 实操直播课程, 特训营, 实训系统
Content quality
excellent
Branding
consistent

Technology

Stack
jQuery 1.11.3, Bootstrap, Animate.css, html2canvas, Tencent TCaptcha, Nuxt.js
Frameworks
Nuxt.js (Vue.js SSR framework)
Platforms
Web
Performance
moderate
Mobile
good
Accessibility
basic
SEO
good

Security

Observed score
75/100
Good practices seen
  • HTTPS enabled
  • Use of Tencent TCaptcha for bot protection
  • No exposed sensitive data in HTML

Analytics and tracking

Services
Baidu Analytics
Tracking level
moderate
Privacy practices
basic

Advertising

Ad networks
360 Union
Tracking pixels
Baidu Analytics
Marketing tools
360 Union, Tencent TCaptcha
Transparency
basic

Site quality

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

Key observations

  1. Website is a comprehensive Chinese accounting education platform
  2. Content is rich with courses, live streams, Q&A, and certifications
  3. Multiple trust seals and certifications displayed prominently
  4. No WHOIS data available, which is unusual for a large established site
  5. No privacy cookie consent mechanism detected despite GDPR relevance
  6. Use of Tencent captcha indicates bot protection
  7. No obvious security headers detected in HTML content
  8. No adult or questionable content detected
  9. Multiple external links to related educational and financial service domains
Technical notes

Notes

The website uses a modern tech stack centered on Nuxt.js for server-side rendering with Vue.js, supported by jQuery and Bootstrap for UI components. It integrates third-party services such as Baidu Analytics and Tencent TCaptcha for analytics and security. The site is mobile-optimized and has good SEO metadata. Performance is moderate, with room for optimization. No CMS is explicitly detected, suggesting a custom or framework-based solution. The technical infrastructure supports a large user base and diverse content types but could benefit from enhanced security configurations and accessibility improvements.
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. 58/100Medium36 findingsView report
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