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Security report for nielsensports.com

Nielsen Sports · Media · N/a

Medium risk. 4 critical or high findings in Security headers and SSL/TLS.

Security score

71/100

Risk levelMedium

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

Nielsen Sports is a globally recognized leader specializing in sponsorship media valuation and data analytics, serving rights holders and brands to optimize their sponsorship portfolios. The company operates primarily in the media sector with a strong B2B focus, offering services such as media valuation, fan insights, research, consulting, and esports analytics. The website reflects a mature digital presence with professional design, clear navigation, and comprehensive SEO optimization. Technically, the site is built on WordPress with modern libraries and frameworks, supported by Google Tag Manager and OneTrust for analytics and privacy compliance. Security posture is strong with HTTPS enforcement, security headers, and cookie consent mechanisms, though DNSSEC is not enabled and no explicit security policy or incident response contacts are published. WHOIS data confirms the domain's legitimacy, showing consistent registration details and appropriate domain age. Overall, the site demonstrates high professionalism, trustworthiness, and compliance with privacy regulations.

Scanned

NIS2 and GDPR posture

GDPR outside view
88/ 100 · Low
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

4 findings rated critical or high. Fix these first.

  1. 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 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';…

  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.

    • High

      Weak Protocols Supported

      Server supports weak protocols: TLSv1.1

      What to do: Disable TLS 1.0, TLS 1.1, and all SSL versions

      • CWE-327
      • OWASP A04:2025
      • ASVS V12.1.1
    • High

      SSL Certificate Expires Soon

      SSL certificate expires in 23 days

      What to do: Renew SSL certificate before expiration

      • NIS2 21(2)(h)
      • IR 2024/2690 9.2(c): Implementing Regulation (EU) 2024/2690, Annex point 9.2(c): Cryptography
      • NIST SC-17: NIST SP 800-53 Rev. 5 SC-17: Public Key Infrastructure Certificates

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

Keep watching nielsensports.com

This scan found 21 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.

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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
52
Security headers
30
Email security
70
DNS health
85
Network security
100
GDPR outside view
88
Average
71

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

Nielsen Sports holds a strong market position as a global leader in sports sponsorship media valuation and analytics. Its business model revolves around providing data-driven insights and consulting services to sports rights holders and brands, enabling optimized sponsorship investments. The company benefits from its association with the parent company Nielsen Holdings plc, enhancing credibility and reach. The website's content and structure target industry professionals and corporate clients, emphasizing data analytics and consulting services. The presence of a dedicated careers page and contact forms indicates active business operations and client engagement. The partnership with the parent company and use of global domains further reinforce its established market presence.

Security posture

The website exhibits a mature security posture with mandatory HTTPS, multiple security headers, and a cookie consent mechanism compliant with GDPR. No critical vulnerabilities or exposed sensitive data were detected in the analysis. However, the absence of DNSSEC and a publicly available security policy or vulnerability disclosure page suggests areas for improvement. Incident response contact information is not explicitly provided, which could hinder timely reporting of security issues. Overall, the security measures align with industry best practices for corporate websites, supporting a secure user experience and regulatory compliance.

Recommendations

  1. Enable DNSSEC to enhance domain name system security and prevent DNS spoofing.
  2. Publish a dedicated security policy and vulnerability disclosure page to improve transparency and encourage responsible reporting.
  3. Add explicit incident response contact channels such as security@ or abuse@ email addresses.
  4. Regularly review and update third-party libraries and plugins to mitigate potential vulnerabilities.
  5. Enhance accessibility features to improve compliance with WCAG standards and broaden user inclusivity.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
Nielsen Sports
Description
The global leader in sponsorship media valuation and data analytics. Helping rights holders and brands optimize sponsorship portfolios.
Key services
Media Valuation, Fan Insights, Research & Consulting, Esports analytics
Content quality
excellent
Branding
consistent

Technology

Stack
WordPress, Yoast SEO, jQuery, Google Tag Manager, OneTrust Cookie Consent, Owl Carousel
Frameworks
WordPress
Platforms
Web
Performance
moderate
Mobile
good
Accessibility
basic
SEO
excellent

Security

Observed score
85/100
Good practices seen
  • HTTPS enforced
  • Use of security headers
  • Cookie consent banner implemented

Analytics and tracking

Services
Google Analytics
Tracking level
moderate
Privacy practices
good

Advertising

Tracking pixels
Google Analytics via Google Tag Manager
Marketing tools
OneTrust Cookie Consent
Transparency
good

Site quality

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

Key observations

  1. Website is professionally designed and well maintained
  2. Clear business focus on sports media valuation and analytics
  3. Good SEO and metadata implementation
  4. Cookie consent and privacy compliance mechanisms in place
  5. No visible security or privacy red flags
  6. No exposed sensitive data or vulnerabilities detected
  7. WHOIS data supports legitimacy and trustworthiness
Technical notes

Notes

The website is built on the WordPress CMS platform, leveraging popular plugins such as Yoast SEO for search engine optimization and OneTrust for cookie consent management. It uses jQuery and Owl Carousel for interactive elements and Google Tag Manager for analytics integration. The site demonstrates good mobile optimization and moderate performance, with valid HTML and CSS. Hosting appears stable and professional, likely managed through the registrar MarkMonitor Inc. The technical infrastructure supports a robust and scalable web presence, though enabling DNSSEC and further optimizing performance could enhance resilience and user experience.
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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