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Security report for dthcnx.com

天天家教网 · Education · China

High risk. 9 critical or high findings in Email security, Network security and 3 other checks.

Security score

46/100

Risk levelHigh

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

天天家教网 is a Chinese online tutoring platform offering a wide range of educational services including one-on-one tutoring for primary, secondary, and university students. The platform positions itself as a leader in the tutoring industry with over fifteen years of service experience, providing both online and in-person tutoring options. The website is well-structured with extensive course categories and educational news content, targeting students and parents seeking tutoring services in China. Technically, the site uses Destoon CMS and includes jQuery libraries, hosted on Alibaba Cloud, with moderate performance and basic mobile optimization. Security posture is moderate with HTTPS enabled but lacks advanced security headers and DNSSEC. Privacy compliance is limited, with no cookie consent mechanism detected and no explicit GDPR compliance indicators. Business credibility is supported by transparent WHOIS data and consistent domain registration details. Overall, the site is functional and content-rich but could improve in security and privacy compliance to enhance trust and user experience.

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

9 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. Network security

    Services reachable from the internet are the first thing attackers probe. Anything open that does not need to be should be closed.

    • Critical

      Critical Service Exposed: MySQL

      Port 3306 (MySQL) is publicly accessible - MySQL - Database server

      What to do: Immediately restrict access to MySQL using firewall or VPN

      • NIS2 21(2)(e)
      • IR 2024/2690 6.7.2(f): Implementing Regulation (EU) 2024/2690, Annex point 6.7.2(f): Network security
      • NIST CM-7: NIST SP 800-53 Rev. 5 CM-7: Least Functionality
      • NIST SC-7: NIST SP 800-53 Rev. 5 SC-7: Boundary Protection

  3. 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';…

  4. 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

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

Keep watching dthcnx.com

This scan found 26 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

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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
62
Security headers
30
Email security
60
DNS health
75
Network security
0
GDPR outside view
50
Average
46

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 · found on this site
  • 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

Breach exposure

Leaked credentials and lookalike domains from OffSeq Breach. The counts are free; the detailed lists are paid add-ons.

Dark web exposure

Add-on

Leaked records that mention dthcnx.com, from OffSeq Breach.

No leaked records found

Breach holds no records for dthcnx.com right now. New leaks arrive continuously, so monitoring on Breach alerts you if that changes.

Monitor on Breach (opens in a new tab)

Technical appendix

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

Business context

Business profile

The website operates in the education sector, focusing on tutoring services across multiple education levels and subjects. Its business model revolves around connecting students with tutors and offering educational content and courses. The platform maintains a broad geographic presence with city-specific subdomains, indicating a regional market strategy within China. Partnerships with other educational websites are evident through friendly links. The company appears to be medium-sized with a relatively new domain but claims a longer service history, suggesting brand continuity beyond the domain age. Revenue streams likely include paid tutoring services and advertising. The site’s content and navigation are professionally maintained, supporting a positive user experience and market positioning as a trusted tutoring resource.

Security posture

The website has a basic security posture with HTTPS enabled, ensuring encrypted communications. However, it lacks DNSSEC, which could protect against DNS spoofing attacks. No security headers such as Content-Security-Policy or X-Frame-Options were detected, which are important for mitigating common web vulnerabilities. There is no visible incident response or security policy information, nor contact channels for reporting security issues. The absence of cookie consent mechanisms indicates potential non-compliance with privacy regulations. No vulnerable libraries were identified, but the use of older jQuery versions may pose risks if not updated. Overall, the security posture is adequate but requires enhancements to meet modern security standards and regulatory compliance.

Recommendations

  1. Enable DNSSEC on the domain to improve DNS security and integrity.
  2. Implement standard security headers including Content-Security-Policy, X-Frame-Options, and X-Content-Type-Options.
  3. Add a cookie consent banner and privacy policy updates to comply with GDPR and other privacy regulations.
  4. Publish explicit security and incident response policies with dedicated contact channels for vulnerability reporting.
  5. Enhance mobile optimization and accessibility to improve user experience across devices.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
天天家教网
Description
天天家教网,权威一对一家教在线辅导网站,为您提供小学、初中、高中以及大学一对一家教上门辅导,拥有十五年家教服务经验,家教行业领导品牌,免费提供在线家教辅导,找家教老师的首选平台。
Key services
家教课程, 找家教老师, 家教培训, 一对一家教辅导
Content quality
good
Branding
consistent

Technology

Stack
jQuery 1.5.2, jQuery 2.1.1, JavaScript, CSS
Performance
moderate
Mobile
basic
Accessibility
basic
SEO
good

Security

Observed score
55/100
Good practices seen
  • HTTPS enabled

Analytics and tracking

Tracking level
minimal
Privacy practices
poor

Advertising

Tracking pixels
Baidu linksubmit push.js
Transparency
basic

Site quality

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

Key observations

  1. Website is a Chinese online tutoring platform with extensive course offerings.
  2. Content is rich and well-structured with multiple education categories.
  3. No explicit privacy or cookie consent banners detected.
  4. No direct company contact emails or phone numbers found on the homepage.
  5. Site uses Destoon CMS, a common Chinese CMS for business websites.
  6. No advanced security headers detected; DNSSEC not enabled.
  7. Mobile optimization is basic but a mobile site is available.
  8. External links mostly to regional subdomains and partner educational sites.
  9. No social media links explicitly found in the HTML content.
  10. No security or incident response contact information publicly available.
Technical notes

Notes

The website is built on Destoon CMS, a popular Chinese CMS platform, and uses jQuery libraries (versions 1.5.2 and 2.1.1) for client-side scripting. The site includes CSS for styling and JavaScript for interactivity, including custom scripts for search, slideshows, and common functions. Hosting is provided by Alibaba Cloud, a reputable provider. Performance is moderate with basic mobile optimization and accessibility features. SEO is supported by meta tags including keywords and descriptions in Chinese. The site structure is clear with extensive categorization of courses and news content. However, the technology stack includes older jQuery versions which may have known vulnerabilities if not patched. There is no evidence of modern frontend frameworks or advanced performance optimization techniques. Overall, the technical infrastructure is functional but could benefit from modernization and security hardening.
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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