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Security report for dnb.co.uk

Dun & Bradstreet Limited · Finance · United Kingdom

Partial score · DNS & email only

62/100

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

Dun & Bradstreet Limited operates a professional B2B data and analytics platform focused on helping enterprises manage risk, optimize sales and marketing, and navigate supply chains. The company leverages nearly two centuries of business data expertise and holds strong market positioning as a trusted global leader. The website reflects a mature digital infrastructure using modern technologies such as React and Adobe Experience Manager, with integrated analytics and consent management tools. Security posture is robust, supported by ISO certifications and FCA regulation, with HTTPS enforced and cookie consent mechanisms in place. No critical vulnerabilities or blocking mechanisms were detected, indicating a secure and accessible platform. Overall, the site demonstrates high professionalism and trustworthiness, though WHOIS data for the subdomain is unavailable due to domain registration rules.

Scanned

NIS2 and GDPR posture

GDPR outside view
95/ 100 · Low
Checks completed
6of 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

2 findings rated critical or high. Fix these first.

  1. 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

      Unable to retrieve SSL certificate

      Could not establish secure connection to retrieve certificate information

      What to do: Check if the server is accessible and SSL/TLS is properly configured

  2. DNS health

    DNS sends visitors and email to the right servers. Misconfigured records can cause outages or let someone redirect your traffic.

    • High

      Potential Subdomain Takeover

      Subdomain dev.dnb.co.uk points to unregistered service dbradstreet2-dev-1037007542.us-east-1.elb.amazonaws.com

      What to do: Remove or fix CNAME record to prevent subdomain takeover

      • WSTG-CONF-10
      • NIS2 21(2)(i)
      • IR 2024/2690 12.4: Implementing Regulation (EU) 2024/2690, Annex point 12.4: Asset inventory
      • NIST CM-8: NIST SP 800-53 Rev. 5 CM-8: System Component Inventory

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

Keep watching dnb.co.uk

This scan found 13 issues across 5 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
Email security
65
DNS health
50
Network security
100
GDPR outside view
95
Average
62

Not counted

  • Security headers: did not complete in this scan.
  • 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 enterprise clients primarily in the finance sector, offering solutions including enterprise and small business data services, public sector solutions, and D-U-N-S Number services. The business model is centered on providing data-driven insights and analytics to support credit risk management and business performance. The presence of ISO certifications and FCA regulation enhances credibility and compliance stature. The website's content and structure support a clear value proposition to business leaders, with a strong partnership ecosystem indicated by social media and investor relations domains. Growth indicators include active content publishing and thought leadership. The company operates under the parent Dun & Bradstreet, Inc., with a UK registered subsidiary.

Security posture

Security maturity is high, with HTTPS enforced and multiple ISO certifications (27001, 14001, 27701) indicating strong information security and privacy management. The site uses a consent management platform (TrustArc) to comply with GDPR and cookie regulations. No exposed sensitive data or vulnerable libraries were detected. However, explicit security headers like CSP or HSTS are not visible and could be improved. Incident response contact information or a security.txt file is not found, representing a minor compliance gap. Overall, the security posture supports business continuity and regulatory compliance effectively.

Recommendations

  1. Implement and enforce security headers such as Content Security Policy (CSP), HTTP Strict Transport Security (HSTS), and X-Frame-Options to enhance protection against common web attacks.
  2. Publish an incident response contact or security.txt file to improve transparency and facilitate vulnerability reporting.
  3. Enhance website accessibility to meet higher standards for users with disabilities.
  4. Regularly audit and update third-party scripts and libraries to mitigate potential vulnerabilities.
  5. Maintain and update privacy and cookie policies to reflect evolving regulations and best practices.

Contact details published on the site

Addresses
Legal name
Dun & Bradstreet Limited
Registration number
160043
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
Dun & Bradstreet Limited
Description
Dun & Bradstreet helps companies large and small drive growth, manage risk, and strengthen the performance of their business.
Key services
Enterprise Solutions, Small Business Solutions, Public Sector Solutions, D-U-N-S Number, Business Data and Analytics
Content quality
good
Branding
consistent

Technology

Stack
Adobe Helix RUM, Google Tag Manager, React, AEM (Adobe Experience Manager), jQuery
Frameworks
React, AEM
Platforms
Web
Performance
moderate
Mobile
good
Accessibility
basic
SEO
good

Security

Observed score
85/100
Good practices seen
  • HTTPS enforced
  • ISO 27001 and related certifications
  • FCA regulation compliance
  • Cookie consent mechanism implemented

Analytics and tracking

Services
Google Analytics (via GTM)
Tracking level
moderate
Privacy practices
good

Advertising

Tracking pixels
TrustArc
Marketing tools
TrustArc Consent Management
Transparency
good

Site quality

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

Key observations

  1. Website is fully accessible with no blocking or WAF challenges.
  2. Content is professional and business-oriented targeting enterprise clients.
  3. Strong privacy and cookie compliance with TrustArc consent management.
  4. Use of modern web technologies including React and Adobe Experience Manager.
  5. No visible security vulnerabilities or exposed sensitive data.
  6. WHOIS data unavailable for www.dnb.co.uk as it is a subdomain, not a registered domain.
  7. Social media presence on LinkedIn, Facebook, and X (Twitter).
  8. No direct contact emails or phone numbers explicitly listed on homepage; contact via service center page.
  9. ISO certifications and FCA regulation indicate strong compliance posture.
Technical notes

Notes

The website is built on a modern tech stack including React and Adobe Experience Manager, providing a scalable and maintainable platform. Google Tag Manager and TrustArc are integrated for analytics and consent management, respectively. Performance is moderate with multiple chunked JavaScript and CSS files loaded asynchronously, supporting good user experience. Mobile optimization is good, though accessibility features are basic and could be improved. The site uses canonical tags and meta descriptions for SEO. Hosting provider details are not explicitly found. Overall, the technical infrastructure supports the business needs effectively with room for optimization in accessibility and security headers.
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. 66/100Medium20 findings · partial scanView report
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