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Security report for nbjzc.com

二手房交易网 · Real Estate · China

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

Security score

48/100

Risk levelHigh

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

The website '二手房交易网' operates as an online real estate marketplace primarily focused on second-hand housing transactions, property sales, rentals, and real estate news within China. It positions itself as a large platform offering extensive listings and related services to a general audience interested in real estate. The business model revolves around providing property information and facilitating transactions in the Chinese real estate market. The website content is well-structured, professionally designed, and offers a good user experience with clear navigation and relevant content.

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 nbjzc.com

This scan found 25 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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Full report

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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
30
Email security
60
DNS health
75
Network security
0
GDPR outside view
50
Average
48

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

Technical appendix

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

Business context

Business profile

The platform targets the Chinese real estate sector, focusing on residential and commercial property transactions. It leverages a marketplace model to connect buyers, sellers, and renters. The website includes multiple city-specific subdomains, indicating a broad geographic coverage. The absence of explicit contact emails or phone numbers and limited transparency on company details suggests a medium-sized operation with room for improved business credibility. The partnership ecosystem includes several related domains linked as friendly sites, indicating some level of networked presence.

Security posture

The website uses HTTPS but lacks advanced security headers and DNSSEC, which are important for protecting users and domain integrity. No cookie consent mechanism or detailed privacy and security policies are present, indicating gaps in compliance with modern privacy regulations such as GDPR. The WHOIS data shows inconsistencies, notably a domain creation date in the future relative to content timestamps, which raises concerns about domain legitimacy and trustworthiness. No incident response or vulnerability disclosure information is available, limiting transparency in security management.

Recommendations

  1. Enable DNSSEC to enhance domain name system security.
  2. Implement standard security headers (Content-Security-Policy, X-Frame-Options, etc.) to protect against common web attacks.
  3. Add a cookie consent banner and detailed privacy policy to improve privacy compliance.
  4. Publish clear contact information including company emails and phone numbers to enhance business credibility.
  5. Clarify and correct WHOIS domain registration data to align with website content and improve trust.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
二手房交易网
Description
二手房交易网,最大的二手房交易市场,为您提供海量的住宅、豪宅别墅、写字楼、商铺等精品二手房信息,房产中介,房屋出售,二手房交易,二手房出售,二手房价格,专业的二手房交易流程,为您创造舒适二手房购房体验。
Key services
second-hand housing information, housing sales, housing rental, real estate news and knowledge, property transaction services
Content quality
good
Branding
moderate

Technology

Stack
jQuery 1.5.2, jQuery 2.1.1, JavaScript, CSS, HTML5
Performance
moderate
Mobile
basic
Accessibility
basic
SEO
good

Security

Observed score
50/100
Good practices seen
  • HTTPS enabled
  • Domain status includes clientDeleteProhibited and clientTransferProhibited

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
good
Navigation
good
Professionalism
good
Trustworthiness
moderate

Key observations

  1. Website is fully accessible with no WAF or blocking detected.
  2. Content is in Chinese and focused on real estate, specifically second-hand housing transactions.
  3. No explicit privacy or cookie policies found beyond basic terms of service.
  4. No contact emails or phone numbers explicitly listed on the homepage or footer.
  5. Uses jQuery libraries and custom JavaScript for UI and functionality.
  6. No social media links detected.
  7. WHOIS data shows domain creation date in the future, inconsistent with content timestamps.
  8. No DNSSEC enabled, no advanced security headers detected.
  9. No visible security or incident response policies.
  10. No analytics services explicitly detected except Baidu push script.
Technical notes

Notes

The website is built on the Destoon CMS platform, utilizing jQuery libraries and custom JavaScript for interactive features. It serves content over HTTPS with moderate performance and basic mobile optimization. SEO practices are adequate with proper meta tags and structured navigation. However, the absence of modern frameworks or advanced performance optimization indicates potential technical debt. The hosting provider is not explicitly identified beyond the registrar, and no CDN or advanced caching mechanisms are evident. Accessibility features are basic, and there is opportunity for modernization to improve user experience and security.
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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