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Security report for sigma-networks.co.uk

Sigma Networks · Energy · United Kingdom

Medium risk. 8 critical or high findings in Security headers, GDPR outside view and 1 other check.

Security score

61/100

Risk levelMedium

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

Sigma Networks is a UK-based professional electrical, security, and data contracting company with over 20 years of experience. They provide a broad range of services including electrical installation and maintenance, data networking, CCTV, thermal screening, access control, fire alarm systems, lockdown systems, and electric vehicle charging. The company serves major infrastructure and commercial projects, positioning itself as a trusted and accredited contractor in the energy and telecommunications sectors. The website reflects a professional business with clear service offerings and client references. Technically, the website uses a traditional tech stack with jQuery, Modernizr, and Revolution Slider, supported by Google Tag Manager and Google Analytics for tracking. The site is moderately optimized for performance and mobile use but uses an outdated jQuery version that may pose security risks. SEO and accessibility are basic but functional. Hosting is via Fasthosts Internet Ltd, consistent with the UK location. From a security perspective, the site uses HTTPS and includes tracking scripts but lacks explicit security headers and modern JavaScript libraries. There is no visible privacy or cookie policy, nor incident response or security contact information, indicating compliance gaps. The WHOIS data shows a long-registered domain consistent with the business history, supporting legitimacy. Overall, the website is professional and credible but would benefit from improved security practices, updated libraries, and enhanced privacy compliance to reduce risk and increase trust.

Scanned

NIS2 and GDPR posture

GDPR outside view
35/ 100 · High
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

8 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. GDPR outside view

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

    • High

      No Privacy Policy found

      GDPR requires a clear and accessible privacy policy

      What to do: Add a comprehensive privacy policy page and link to it prominently

    • High

      No Cookie Policy found

      GDPR requires clear information about cookie usage

      What to do: Add a dedicated cookie policy explaining cookie usage and purposes

    • 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 sigma-networks.co.uk

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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
50
Email security
70
DNS health
65
Network security
100
GDPR outside view
35
Average
61

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

Sigma Networks operates in the electrical and communications contracting market, targeting business clients requiring infrastructure services. Their competitive advantage lies in their extensive accreditations, manufacturer certifications, and experience with major projects such as London Bridge Station and Westfield Shopping Centre. The business model is B2B service provision with a focus on quality and compliance. Revenue streams likely come from project contracts, maintenance services, and specialized installations. The company maintains partnerships with industry bodies and manufacturers, enhancing credibility. Growth indicators include a diverse service portfolio and high-profile projects. The website supports their market presence but lacks some modern compliance features.

Security posture

The current security posture is moderate. The site uses HTTPS and includes Google Tag Manager and Analytics for monitoring but lacks critical security headers and uses an outdated jQuery version with known vulnerabilities. No privacy or cookie policies are present, and no incident response or security contact information is provided. These gaps expose the business to potential compliance risks and security vulnerabilities. The absence of a security.txt file and explicit data protection officer contact further limits incident response readiness. Overall, the security culture appears basic and would benefit from enhancements to align with GDPR and industry best practices.

Recommendations

  1. Implement and publish comprehensive privacy and cookie policies to improve GDPR compliance and user trust.
  2. Upgrade all JavaScript libraries, especially jQuery, to current supported versions to mitigate known vulnerabilities.
  3. Add and configure security headers such as Content-Security-Policy, X-Frame-Options, and Strict-Transport-Security to enhance protection.
  4. Create and publish a security.txt file and provide clear incident response contact information to improve security posture and transparency.
  5. Enhance mobile optimization and accessibility features to improve user experience and SEO performance.

Contact details published on the site

Addresses
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
Sigma Networks
Description
Sigma Networks is a professional electrical, security, and data contracting company offering services including electrical installation and maintenance, data networking, CCTV systems, thermal screening, access control, fire alarm systems, lockdown systems, and electric vehicle charging. They serve major projects such as London Bridge Station, Westfield Shopping Centre, and ITF Headquarters.
Key services
Electrical Services, Data Networking, CCTV Systems, Thermal Screening, Access Control, Fire Alarm Systems, Lockdown Systems, Electric Vehicle Charging
Content quality
good
Branding
consistent

Technology

Stack
jQuery 1.8.2, Modernizr, Revolution Slider, Google Tag Manager, Google Analytics, jQuery UI, jQuery Validate, jQuery Flexslider, jQuery jCarousel, jQuery Tipsy, jQuery Fancybox
Performance
moderate
Mobile
basic
Accessibility
basic
SEO
basic

Security

Observed score
60/100
Good practices seen
  • Use of HTTPS implied by Google Tag Manager and Google Analytics scripts loaded over HTTPS
  • No exposed emails in raw HTML (emails are linked via contact form page)

Analytics and tracking

Services
Google Analytics, Google Tag Manager
Tracking level
moderate
Privacy practices
poor

Advertising

Transparency
basic

Site quality

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

Key observations

  1. Website is fully accessible with no blocking or WAF challenges.
  2. No privacy or cookie policies found, indicating compliance gaps.
  3. Contact information is clearly presented with phone number, physical address, and contact form.
  4. Multiple professional accreditations and manufacturer certifications are prominently displayed.
  5. Use of outdated jQuery version is a security concern.
  6. No explicit security headers detected in provided data.
  7. Google Tag Manager and Google Analytics are used for tracking.
  8. No social media links with URLs provided; social icons present but hrefs are '#'.
  9. No forms with visible input fields except a commented-out search form; contact form is linked but not embedded.
  10. Website design and navigation are professional and clear.
Technical notes

Notes

The website uses a traditional front-end stack with jQuery 1.8.2, Modernizr, and Revolution Slider, supported by various jQuery plugins for UI components. Google Tag Manager and Google Analytics are integrated for tracking. The site is hosted by Fasthosts Internet Ltd, a UK-based registrar and hosting provider. Performance is moderate with basic mobile responsiveness and accessibility. The site lacks a CMS, indicating a custom or static site structure. Technical debt is indicated by outdated libraries and missing security headers. Modernization opportunities include updating libraries, improving SEO metadata, and enhancing security configurations to reduce risk and improve maintainability.
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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