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Security report for ssethermal.com

SSE Thermal · Energy · United Kingdom

Low risk. 3 critical or high findings in Email security and SSL/TLS.

Security score

77/100

Risk levelLow

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

SSE Thermal is a UK-based energy company focused on providing flexible thermal energy solutions to support the country's transition to net zero emissions. The company emphasizes low-carbon technologies including carbon capture and hydrogen power projects. The website positions SSE Thermal as a key player in the energy sector with a strong commitment to sustainability and innovation. Technically, the website is built on the Umbraco CMS platform, uses modern web technologies, and includes a cookie consent mechanism compliant with GDPR. However, the absence of WHOIS registration data raises concerns about domain legitimacy, although the professional presentation and links to SSE plc suggest authenticity. Security posture is generally good with HTTPS enforced and no exposed sensitive data, but the lack of security headers and formal security policies indicates room for improvement. Overall, the site is well-designed and trustworthy but would benefit from enhanced transparency in domain registration and security disclosures.

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

3 findings rated critical or high. Fix these first.

  1. Email security

    SPF, DKIM and DMARC stop others sending email that looks like it comes from your domain, a common route to phishing and invoice fraud.

    • High

      No SPF record found

      SPF helps prevent email spoofing

      What to do: Add SPF record: "v=spf1 include:_spf.yourmailprovider.com ~all"

  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

      Weak SSL Key Length

      SSL certificate uses 256-bit key, which is considered weak

      What to do: Use at least 2048-bit RSA or 256-bit ECC key

      • CWE-326
      • OWASP A04:2025
      • Mozilla TLS: Mozilla Server Side TLS 6.0 intermediate: rsa_key_size 2048

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

Keep watching ssethermal.com

This scan found 19 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
47
Security headers
85
Email security
65
DNS health
80
Network security
100
GDPR outside view
83
Average
77

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

Breach exposure

Leaked credentials and lookalike domains from OffSeq Breach. The counts are free; the detailed lists are paid add-ons.

Dark web exposure

Add-on

Leaked records that mention ssethermal.com, from OffSeq Breach.

No leaked records found

Breach holds no records for ssethermal.com right now. New leaks arrive continuously, so monitoring on Breach alerts you if that changes.

Monitor on Breach (opens in a new tab)

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 operates in the energy sector with a focus on flexible thermal generation and emerging low-carbon technologies. SSE Thermal is a subsidiary of SSE plc, a major UK energy provider, which strengthens its market position. The business model revolves around developing and operating energy infrastructure that supports the UK's net zero goals. The website targets investors, industry stakeholders, and potential employees, highlighting career opportunities and sustainability initiatives. The presence of active news updates and social media engagement indicates a dynamic and transparent communication strategy. The lack of visible certifications or detailed business registration data on the site suggests reliance on the parent company's reputation. Strategic partnerships and project developments in hydrogen and carbon capture position SSE Thermal for growth in the evolving energy market.

Security posture

The website demonstrates a moderate to good security posture with HTTPS enabled and a comprehensive cookie consent mechanism that respects user privacy. However, the absence of key security headers such as Content-Security-Policy and X-Frame-Options reduces protection against common web attacks. No incident response or vulnerability disclosure information is provided, which could hinder timely reporting and remediation of security issues. The missing WHOIS data is a notable concern for domain legitimacy and trust. Overall, while no critical vulnerabilities are evident, the site would benefit from implementing additional security best practices and transparency measures to enhance trust and compliance.

Recommendations

  1. Implement standard security headers (CSP, X-Frame-Options, X-Content-Type-Options, Referrer-Policy) to strengthen web security.
  2. Publish a clear security policy and incident response contact information to improve transparency and readiness.
  3. Add a vulnerability disclosure policy or security.txt file to facilitate responsible reporting of security issues.
  4. Verify and publish domain registration details to improve trust and legitimacy perception.
  5. Enhance contact information by including verified company phone numbers and physical addresses where applicable.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
SSE Thermal
Description
SSE Thermal is focused on becoming the leading provider of flexible thermal energy in a net zero world, working on carbon capture and hydrogen solutions across the UK.
Key services
Flexible thermal energy generation, Carbon capture solutions, Hydrogen power projects
Content quality
good
Branding
consistent

Technology

Stack
Google Fonts, Google Maps API, jQuery, Slick Slider, Umbraco CMS, Civic Cookie Control
Frameworks
Umbraco CMS
Platforms
Web
Performance
moderate
Mobile
good
Accessibility
good
SEO
good

Security

Observed score
85/100
Good practices seen
  • HTTPS enforced
  • Cookie consent banner with granular controls
  • No exposed sensitive data in HTML

Analytics and tracking

Services
Google Analytics (implied by _ga cookies)
Tracking level
moderate
Privacy practices
good

Advertising

Transparency
basic

Site quality

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

Key observations

  1. Website is professionally designed and well-structured.
  2. Content focuses on energy transition and sustainability.
  3. No visible security headers detected in HTML source.
  4. WHOIS data unavailable, raising questions about domain registration status.
  5. Cookie consent mechanism is implemented with detailed options.
  6. No explicit contact phone numbers found; only email/contact form references.
  7. No terms of service page detected.
  8. No security.txt or vulnerability disclosure policy found.
  9. Social media presence on LinkedIn and Twitter confirmed.
  10. No adult or questionable content detected.
Technical notes

Notes

The website uses Umbraco CMS, Google Fonts, Google Maps API, jQuery, and Slick Slider for interactive elements. The cookie consent is managed by Civic Cookie Control, ensuring GDPR compliance. The site is mobile-optimized with responsive images and accessible navigation. Performance is moderate with some external dependencies but no major issues detected. SEO is supported by proper meta tags and Open Graph data, although no JSON-LD structured data was found. The absence of security headers and WHOIS data are technical gaps. Overall, the infrastructure is modern and functional but could be improved by adding security headers and verifying domain registration.
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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