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Security report for dln.com.hk

DLN · Real Estate · Hong Kong

High risk. 9 critical or high findings in GDPR outside view, SSL/TLS and 1 other check.

Security score

36/100

Risk levelHigh

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

DLN is a well-established architectural and engineering firm founded in 1972 in Hong Kong, recognized for its high-profile projects across Asia and globally. The company specializes in designing skyscrapers and complex building complexes, shaping urban landscapes with a strong market reputation. The website reflects a professional business presence with consistent branding and relevant content targeting clients in the real estate and construction sectors. Technically, the website is built on a custom PHP platform running on an Apache server with older software versions. It uses common web technologies such as jQuery and Bootstrap for frontend responsiveness and styling. However, the website lacks modern security implementations, notably missing HTTPS support and valid SSL certificates, which significantly impacts its security posture. Performance data is unavailable, but the site appears to have basic mobile optimization and SEO practices. From a security perspective, the absence of HTTPS and security headers exposes users to risks such as data interception and man-in-the-middle attacks. No privacy, cookie, or terms of service policies are present, indicating poor privacy compliance. No contact information or incident response channels are provided, limiting user trust and regulatory compliance. The WHOIS data aligns well with the business claims, showing a consistent and legitimate domain registration. Overall, the website demonstrates moderate business credibility and good content quality but suffers from critical security shortcomings and lack of privacy compliance. Strategic improvements in SSL implementation, privacy policies, and security best practices are essential to enhance trust and protect users.

Scanned

NIS2 and GDPR posture

GDPR outside view
0/ 100 · Critical
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. GDPR outside view

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

    • Critical

      No HTTPS encryption

      GDPR requires appropriate security measures for personal data

      What to do: Implement SSL/TLS certificate for HTTPS

  2. SSL/TLS

    TLS encrypts the connection and proves the site is really yours. Weak or expiring certificates trigger browser warnings and put traffic at risk.

    • Critical

      No HTTPS Encryption

      Website does not use HTTPS encryption, making all data transmission vulnerable to interception

      What to do: Implement SSL/TLS certificate and redirect all HTTP traffic to HTTPS

  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 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';…

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

Keep watching dln.com.hk

This scan found 18 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
0
Security headers
15
Email security
50
DNS health
50
Network security
100
GDPR outside view
0
Average
36

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

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 dln.com.hk, from OffSeq Breach.

Total records
249
Employees
0
Customers
245
Third parties
4
Weak passwords
7%

2 subdomains affected

See the 10 newest leaked credentials

A one-off add-on to this report that lists the most recent identifier and password pairs OffSeq Breach holds for dln.com.hk.

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Breach keeps ingesting new leaks, so these numbers can grow between scans.

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Technical appendix

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

Business context

Business profile

DLN operates as a prominent architectural and engineering firm with a focus on large-scale and complex construction projects. Its competitive advantage lies in its long-standing reputation since 1972 and its footprint in Hong Kong and Asia. The business model centers on providing design and engineering services to real estate developers and urban planners. The company targets clients requiring high-value architectural solutions, including skyscrapers and integrated building complexes. The website's social media presence supports brand visibility and client engagement. No direct revenue streams or partnerships are disclosed on the website. Growth indicators are implied by the firm's longevity and project portfolio. The lack of detailed business disclosures limits deeper financial or operational insights.

Security posture

The current security posture of the website is weak due to the absence of HTTPS and a valid SSL certificate, which is a critical vulnerability. The server runs outdated software versions, increasing exposure to known exploits. No advanced security headers or mechanisms such as HSTS, DNSSEC, or OCSP stapling are implemented. The lack of privacy and cookie policies, as well as incident response contacts, indicates poor compliance with data protection regulations like GDPR. No vulnerability disclosure or security.txt files are present, limiting transparency and trust. While no active vulnerabilities or malware are detected, the overall security maturity is low, posing risks to both the business and its users.

Recommendations

  1. Implement a valid SSL/TLS certificate and enforce HTTPS across the entire website to secure data transmission.
  2. Add comprehensive privacy and cookie policies to comply with GDPR and other data protection regulations.
  3. Introduce security headers such as Content-Security-Policy, X-Frame-Options, and X-XSS-Protection to mitigate common web attacks.
  4. Provide clear contact information including emails and phone numbers for customer support and incident response.
  5. Regularly update server software and dependencies to patch known vulnerabilities and improve security posture.
Technical notes

Notes

The website is hosted on an Apache 2.4.6 server running CentOS with PHP 7.3.1, which are outdated and may lack security patches. The frontend uses jQuery 3.5.1, Bootstrap, Font Awesome, and other common libraries for UI and interactivity. No CMS is detected, indicating a custom-built platform. Performance metrics are missing, but the site includes responsive design elements and basic SEO meta tags. The absence of HTTPS and modern security features is a significant technical risk. The site does not use analytics or tracking tools, suggesting minimal data collection. There is room for modernization by upgrading server software, implementing HTTPS, and adopting modern web standards and security practices.
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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