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Security report for sms-plc.com

SMS · Energy · United Kingdom

Low risk. 3 critical or high findings in SSL/TLS, Security headers and 1 other check.

Security score

78/100

Risk levelLow

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

SMS is a UK-based energy infrastructure and solutions provider focused on delivering low-carbon energy technologies and services to homes, businesses, and utilities. The company positions itself as a leader in smart metering and energy management, supporting the transition to a greener, more sustainable energy system. Their offerings include infrastructure design, metering services, data analytics, energy services, and grid flexibility solutions. The website demonstrates a mature digital presence with modern technologies such as WordPress, Bootstrap, and Google Tag Manager, optimized for performance and SEO. Security posture is strong with HTTPS and cookie consent mechanisms, though explicit security policies and incident response contacts are not publicly available. The absence of WHOIS data is a notable anomaly but does not detract significantly from the overall legitimacy given the professional content and certifications. Strategic recommendations include enhancing transparency around security policies and improving WHOIS data availability to bolster trust.

Scanned

NIS2 and GDPR posture

GDPR outside view
80/ 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

3 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.

    • 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

  2. 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 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';…

  3. GDPR outside view

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

    • High

      No Cookie Consent Banner found

      GDPR requires explicit consent for non-essential cookies

      What to do: Implement a cookie consent banner that appears on first visit

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

Keep watching sms-plc.com

This scan found 17 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
67
Security headers
65
Email security
70
DNS health
85
Network security
100
GDPR outside view
80
Average
78

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

SMS operates in the energy sector with a focus on sustainability and carbon reduction. Their market position as the UK's leading independent metering provider and their extensive service portfolio indicate a large enterprise with a broad customer base including energy suppliers, commercial businesses, and residential customers. The company leverages partnerships for recruitment and maintains active social media channels for engagement. Their business model integrates asset funding, engineering expertise, and software solutions to deliver end-to-end energy services. Growth indicators include ongoing case studies and innovation projects such as FlexiGrid and net zero strategies. The company emphasizes ESG commitments and holds multiple ISO certifications, reinforcing their credibility and governance standards.

Security posture

The website employs HTTPS with a strong SSL configuration and uses security best practices such as cookie consent banners and controlled script loading via Google Tag Manager. However, some standard security headers like X-Frame-Options and Referrer-Policy are not explicitly detected and should be verified. There is no publicly available security policy or incident response contact information, which is a gap in transparency and readiness. No vulnerabilities or exposed sensitive data were found in the HTML content. Overall, the security maturity is good but could be improved by publishing formal security documentation and a vulnerability disclosure policy.

Recommendations

  1. Publish a clear security policy and incident response contact details on the website to improve transparency and trust.
  2. Implement and verify standard security headers such as X-Frame-Options, X-Content-Type-Options, and Referrer-Policy to enhance protection against common web attacks.
  3. Provide a vulnerability disclosure or security.txt file to encourage responsible reporting of security issues.
  4. Investigate and resolve the absence of WHOIS data to improve domain registration transparency and legitimacy perception.
  5. Continue maintaining strong privacy compliance and update cookie consent mechanisms as regulations evolve.

Contact details published on the site

Registration number
Company Number SC367563
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
SMS
Description
From energy infrastructure that creates greener homes and businesses, to integrated energy management critical for carbon reduction.
Key services
Infrastructure design and engineering, Metering services (gas and electric), Energy data collection and analytics, Energy services including net zero strategy and renewable energy solutions, Flexibility services including Virtual Power Plant platform
Content quality
excellent
Branding
consistent

Technology

Stack
WordPress 6.9.4, Yoast SEO plugin, jQuery, Bootstrap, Google Tag Manager, Trustpilot widget
Frameworks
Bootstrap
Platforms
WordPress
Performance
fast
Mobile
excellent
Accessibility
good
SEO
excellent

Security

Observed score
85/100
Good practices seen
  • HTTPS enforced
  • Cookie consent mechanism implemented
  • No exposed sensitive data in HTML
  • Use of Google Tag Manager for controlled script loading

Analytics and tracking

Services
Google Tag Manager
Tracking level
moderate
Privacy practices
good

Advertising

Tracking pixels
Trustpilot
Marketing tools
Yoast SEO
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. Comprehensive energy sector solutions presented
  3. Strong focus on sustainability and net zero initiatives
  4. Good privacy and cookie compliance with consent mechanism
  5. No visible security policy or incident response contacts
  6. No WHOIS data available, which is uncommon for .com domains
  7. Use of modern web technologies and SEO best practices
  8. No signs of malicious or suspicious content
Technical notes

Notes

The website is built on WordPress 6.9.4 with the Yoast SEO plugin, jQuery, and Bootstrap framework, indicating a modern and maintainable tech stack. Hosting uses AWS Cloudfront CDN for performance optimization. The site is mobile responsive with good accessibility and SEO optimization. Google Tag Manager is used for analytics and script management, and Trustpilot widgets provide social proof. The site loads quickly and has a professional design with clear navigation. There are no broken elements or errors detected. Opportunities exist to enhance security headers and formalize security documentation to reduce technical risks.
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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