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Security report for sea-systems.co.uk

S.E.A Systems Ltd · Healthcare · United Kingdom

Medium risk. 5 critical or high findings in SSL/TLS, GDPR outside view and 1 other check.

Security score

64/100

Risk levelMedium

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

S.E.A Systems Ltd is a UK-based specialist company providing installation and maintenance services for warden call, nurse call, door entry, CCTV, and door automation systems primarily targeting housing, healthcare, and care providers across the United Kingdom. The company positions itself as a niche service provider within the healthcare and housing security sectors, focusing on delivering tailored communication and security solutions. The website content reflects a professional and consistent brand image, although it lacks detailed business and contact information on the homepage. Technically, the website is built on the Squarespace platform, leveraging modern web technologies such as HTML5, CSS3, and JavaScript, with Google Fonts integration. The site demonstrates good mobile optimization and moderate performance, with basic accessibility features and good SEO practices. Hosting is managed via Squarespace's CDN infrastructure, ensuring reliable uptime and SSL encryption with HSTS enabled, indicating a secure transport layer. From a security perspective, the site uses HTTPS with strong SSL configuration and HSTS but lacks explicit security headers such as Content-Security-Policy or X-Frame-Options. No visible vulnerabilities or exposed sensitive data were detected. The cookie consent mechanism is implemented, supporting GDPR compliance to some extent, but no privacy policy or terms of service pages were found, which is a compliance gap. The WHOIS lookup failed due to domain naming rules violation, limiting the ability to verify domain registration details and reducing trustworthiness. Overall, the website presents a moderate risk profile with good technical foundations but requires improvements in transparency, privacy compliance, and security best practices. Strategic recommendations include publishing comprehensive privacy and security policies, enhancing security headers, and providing clear contact information for incident response. These steps will improve…

Scanned

NIS2 and GDPR posture

GDPR outside view
50/ 100 · Medium
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

5 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. 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

      Third-party services without privacy policy

      Detected services: Facebook, LinkedIn, Google APIs

      What to do: Document all third-party data sharing in your privacy policy

  3. 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';…

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Keep watching sea-systems.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
54
Security headers
45
Email security
65
DNS health
70
Network security
100
GDPR outside view
50
Average
64

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

S.E.A Systems Ltd operates in a specialized niche within the UK healthcare and housing sectors, focusing on communication and security system installations and maintenance. The business model is service-oriented, targeting institutional clients such as housing authorities and healthcare providers. The company leverages a digital presence via a Squarespace-hosted website, indicating a small to medium enterprise scale. The lack of detailed business data such as founding year or parent company suggests an independent operation. Social media presence on LinkedIn and Instagram supports brand visibility and potential client engagement. The absence of detailed contact information and privacy policies may limit customer trust and regulatory compliance. There is no evidence of partnerships or subsidiaries from the website data. The company appears to maintain a focused service portfolio with potential for growth in the UK healthcare security market.

Security posture

The website demonstrates a baseline security posture with HTTPS enforced and HSTS enabled, ensuring encrypted communications. However, the absence of key security headers such as Content-Security-Policy, X-Content-Type-Options, and X-Frame-Options indicates room for improvement in mitigating common web vulnerabilities like clickjacking and MIME sniffing. No signs of vulnerable or outdated libraries were detected in the scripts loaded. The cookie consent banner indicates awareness of privacy regulations, but the lack of a privacy policy and incident response contact details suggests incomplete compliance with GDPR and related frameworks. The WHOIS data unavailability raises concerns about domain registration transparency, which could impact trust. Overall, the security posture is moderate but would benefit from enhanced security controls and policy disclosures.

Recommendations

  1. Publish a comprehensive privacy policy and terms of service to improve regulatory compliance and user trust.
  2. Implement additional HTTP security headers such as Content-Security-Policy, X-Content-Type-Options, and X-Frame-Options.
  3. Provide clear contact information including emails and phone numbers for general inquiries and security incident reporting.
  4. Regularly audit and update third-party scripts and libraries to avoid vulnerabilities.
  5. Consider verifying and correcting domain registration details to ensure WHOIS transparency and legitimacy.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
S.E.A Systems Ltd
Description
S.E.A Systems installs and maintains warden call, nurse call, door entry, CCTV and door automation for housing, healthcare and care providers across the UK.
Key services
warden call systems, nurse call systems, door entry systems, CCTV installation and maintenance, door automation
Content quality
good
Branding
consistent

Technology

Stack
Squarespace, Google Fonts (Work Sans), JavaScript, CSS3, HTML5
Platforms
Squarespace
Performance
moderate
Mobile
good
Accessibility
basic
SEO
good

Security

Observed score
75/100
Good practices seen
  • HSTS enabled

Analytics and tracking

Tracking level
minimal
Privacy practices
basic

Advertising

Transparency
poor

Site quality

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

Key observations

  1. Website is hosted on Squarespace platform with standard templates and scripts.
  2. No visible contact emails or phone numbers on homepage content.
  3. Cookie consent banner is present and functional.
  4. No privacy policy or terms of service pages detected.
  5. No explicit security or incident response information found.
  6. Social media links to LinkedIn and Instagram are present and appear legitimate.
  7. No advertising or tracking scripts detected beyond platform defaults.
  8. WHOIS data unavailable due to domain naming rules violation error.
Technical notes

Notes

The website is built on the Squarespace platform, utilizing standard web technologies including HTML5, CSS3, and JavaScript. It uses Google Fonts for typography and is hosted on Squarespace's CDN infrastructure, which provides reliable performance and SSL encryption. The site includes a cookie consent banner supporting GDPR compliance. The technical implementation is modern and mobile-optimized, with good SEO metadata including Open Graph and JSON-LD structured data. However, the site lacks advanced security headers and detailed accessibility features. Performance is moderate, typical for a CMS-based site. There is no evidence of custom backend frameworks or complex integrations. Overall, the technical infrastructure is solid for a small business website but could be enhanced with improved security and compliance features.
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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