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Security report for adnetzero.com

Ad Net Zero Limited · Media · United Kingdom

Medium risk. 4 critical or high findings in Security headers, SSL/TLS and 1 other check.

Security score

68/100

Risk levelMedium

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

Ad Net Zero Limited is a UK-based organization dedicated to driving sustainability within the advertising industry by providing a structured five-point Action Plan and a Foundational Pathway self-assessment tool. The company collaborates with global industry leaders and agencies to reduce emissions related to advertising production, media planning, and messaging. Their website reflects a mature digital presence with strong SEO, modern technology stack, and good mobile optimization. Security posture is solid with HTTPS and domain protections, though DNSSEC is not enabled and security headers are not evident. Privacy compliance is well addressed with clear policies and consent mechanisms. Overall, the company presents a trustworthy and professional image with strong industry partnerships.

Scanned

NIS2 and GDPR posture

GDPR outside view
83/ 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 X-Frame-Options header

      Prevents clickjacking attacks

      What to do: Add "X-Frame-Options: DENY" or "X-Frame-Options: SAMEORIGIN"

  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

  3. DNS health

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

    • High

      Domain Expires Soon

      Domain expires in 25 days

      What to do: Renew domain registration before expiration

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

Keep watching adnetzero.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.

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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
70
DNS health
65
Network security
100
GDPR outside view
83
Average
68

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

The company occupies a niche in the media sector focusing on environmental sustainability in advertising. Its business model is collaborative and non-profit oriented, targeting advertisers, agencies, and marketing service companies globally. The presence of major global partners such as Amazon, Google, Meta, and Microsoft indicates strong market positioning and credibility. The organization leverages partnerships with PwC and others to provide benchmarking and training services. Growth indicators include expanding regional partner sites and a comprehensive resource offering. The company’s digital ecosystem is well integrated with analytics and marketing tools that respect privacy.

Security posture

The website demonstrates a good security baseline with HTTPS enforced and domain status protections in place. However, the absence of DNSSEC and security headers like Content Security Policy or HSTS suggests room for improvement. No incident response or security policy pages were found, which could enhance transparency and preparedness. No vulnerabilities or exposed sensitive data were detected in the HTML content. Analytics tools used are privacy-conscious, and cookie consent mechanisms are implemented. Overall, the security maturity is moderate to good but could be enhanced with additional controls and disclosures.

Recommendations

  1. Enable DNSSEC to strengthen DNS security and prevent spoofing.
  2. Implement standard security headers such as CSP, HSTS, X-Frame-Options to mitigate common web attacks.
  3. Publish a dedicated security policy and incident response contact information to improve transparency and trust.
  4. Consider adding a vulnerability disclosure policy or security.txt file to encourage responsible reporting.
  5. Regularly audit third-party scripts and analytics tools to ensure no vulnerable libraries are included.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
Ad Net Zero Limited
Description
Ad Net Zero is focused on helping the advertising industry reduce emissions and drive sustainable growth through a five-point Action Plan and a Foundational Pathway self-assessment tool. It partners with companies and agencies to embed sustainability in advertising production, media planning, and messaging.
Key services
Sustainability Action Plan, Foundational Pathway self-assessment, Training, Events, Resources and Reports
Content quality
excellent
Branding
consistent

Technology

Stack
WordPress, Yoast SEO, Bootstrap, jQuery, FontAwesome, Google Fonts, Nutshell Analytics, Plausible Analytics, Autoptimize
Frameworks
Bootstrap
Platforms
WordPress
Performance
moderate
Mobile
good
Accessibility
good
SEO
excellent

Security

Observed score
80/100
Good practices seen
  • HTTPS enabled
  • No exposed sensitive data in HTML
  • Use of security status domain status flags in WHOIS (clientDeleteProhibited etc.)

Analytics and tracking

Services
Nutshell Analytics, Plausible Analytics
Tracking level
moderate
Privacy practices
good

Advertising

Tracking pixels
Nutshell Analytics, Plausible Analytics
Marketing tools
Nutshell Analytics, Plausible Analytics
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. Strong focus on sustainability and climate emergency in advertising.
  3. Good use of structured data and SEO best practices.
  4. Multiple global partners and supporters from reputable companies.
  5. No signs of malicious or suspicious content.
  6. No exposed sensitive data or security issues detected in HTML.
  7. Use of modern analytics tools with privacy considerations.
  8. No phone numbers or physical addresses explicitly listed on homepage.
  9. Contact primarily via email and login portal for supporters.
Technical notes

Notes

The website is built on WordPress with a child theme of Twenty Seventeen, utilizing Bootstrap for responsive design and jQuery for interactivity. Fonts are loaded from Google Fonts and Adobe Typekit. Performance is moderate with caching and optimization plugins like Autoptimize in use. Analytics are handled by Nutshell and Plausible, both modern and privacy-aware services. The site is mobile optimized and accessible with font size adjustment features. Technical debt appears low, but enabling DNSSEC and security headers would modernize the security posture. Hosting is inferred to be with GoDaddy based on WHOIS data. Overall, the technical infrastructure supports a professional and scalable web presence.
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. 68/100Medium26 findingsView report
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