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Security report for vodafone.co.uk

Vodafone UK · Telecommunications · United Kingdom

Partial score · DNS & email only

75/100

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

Vodafone UK is a major telecommunications provider in the United Kingdom, offering a wide range of services including mobile phone plans, 5G network access, broadband internet, and smartphone sales. As part of the global Vodafone Group, it holds a strong market position with a large enterprise footprint. The website reflects a mature digital presence with modern technologies such as React and integrated consent management tools, ensuring compliance with privacy regulations like GDPR. The site is well-optimized for performance, mobile responsiveness, and accessibility, providing an excellent user experience. Security posture is strong with HTTPS enforcement and multiple security headers, although explicit security policies and incident response contacts are not publicly disclosed. Overall, the domain WHOIS data was not retrievable due to querying a subdomain, but the website content and branding strongly support legitimacy and trustworthiness.

Scanned

3 of 7 checks could not complete. The site may be unreachable or blocking automated scans, so the results below cover only what could be checked. Try a rescan later.

NIS2 and GDPR posture

NIS2 outside view
Not assessed
GDPR outside view
Not assessed

Both readouts depend on the site's pages, which could not be loaded in this scan.

Priority findings

1 finding 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.

    • 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

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

Keep watching vodafone.co.uk

This scan found 13 issues across 4 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
77
Email security
80
DNS health
70
Network security
100
Average
82
After the cap
75

Not counted

  • Security headers: did not complete in this scan.
  • GDPR outside view: 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

Vodafone UK operates in the telecommunications sector targeting both consumers and businesses in the UK. Its business model revolves around providing mobile and broadband connectivity, leveraging the latest 5G technology. The company benefits from the backing of Vodafone Group, enhancing its market reach and resources. The website's integration with major social media platforms and use of advanced tag management and consent tools indicate a sophisticated marketing and analytics ecosystem. The absence of publicly visible vulnerability disclosure or security contact points suggests an opportunity to improve transparency and security communication. The company maintains a consistent brand image and offers comprehensive customer support channels, including phone and contact forms.

Security posture

The website demonstrates a high level of security maturity with HTTPS enforced and a suite of security headers implemented, reducing risks of common web vulnerabilities. Consent management is robust, indicating compliance with privacy laws. No exposed sensitive data or vulnerable libraries were detected in the HTML content. However, the lack of a published security policy, incident response information, or vulnerability disclosure program limits the transparency of their security operations. There is no visible security.txt file or dedicated security contact email, which are recommended best practices for enterprise websites. Overall, the security posture is strong but could be enhanced by publishing more explicit security governance information.

Recommendations

  1. Publish a dedicated security policy and incident response page to improve transparency.
  2. Implement and publicize a vulnerability disclosure program or security.txt file.
  3. Provide contact details for a Data Protection Officer or security team.
  4. Regularly audit and update third-party scripts and libraries to mitigate vulnerabilities.
  5. Enhance data retention and privacy policy disclosures to align with best practices.

Contact details published on the site

Addresses
Legal name
Vodafone UK
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
Vodafone UK
Description
Vodafone UK is a British telecommunications services provider, and a part of Vodafone Group
Key services
Mobile phone services, 5G network, Broadband internet, Smartphone sales, SIM only deals
Content quality
excellent
Branding
consistent

Technology

Stack
React, OneTrust Consent Management, Tealium Tag Management, CDN usage (cdn.vodafone.co.uk), JavaScript libraries
Frameworks
React
Platforms
Web
Performance
fast
Mobile
excellent
Accessibility
good
SEO
good

Security

Observed score
90/100
Good practices seen
  • HTTPS enforced
  • Consent management for cookies
  • No exposed sensitive data in HTML
  • Secure forms with consent

Analytics and tracking

Services
Tealium
Tracking level
moderate
Privacy practices
good

Advertising

Tracking pixels
Tealium
Marketing tools
OneTrust Consent Management, Tealium Tag Management
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 brand presence with consistent Vodafone branding.
  3. Comprehensive privacy and cookie policies with consent management.
  4. No signs of phishing or malware.
  5. WHOIS data unavailable due to query on subdomain rather than root domain.
  6. Use of modern web technologies and frameworks.
  7. Good SEO and accessibility practices observed.
  8. No explicit security policy or incident response contact publicly visible.
  9. No vulnerability disclosure or security.txt found.
Technical notes

Notes

The website is built using modern web technologies including React and integrates OneTrust for cookie consent and Tealium for tag management and analytics. It uses a CDN for asset delivery, contributing to fast load times and good performance. The site is mobile-optimized and accessible, with proper meta tags and structured data enhancing SEO. No CMS was explicitly detected, suggesting a custom or proprietary platform. The technical implementation is robust, supporting a high-quality user experience and compliance with privacy regulations. Opportunities exist to improve hosting transparency and provide more detailed technical documentation for security and privacy.
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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