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Security report for sea-ltd.co.uk

SEA Ltd · Other · United Kingdom

High risk. 7 critical or high findings in Network security, Security headers and 1 other check.

Security score

49/100

Risk levelHigh

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

SEA Ltd is a small, established marketing and design agency based in Kent, UK, with over 30 years of experience delivering effective internal and external communications. Their business model centers on workshops, consultancy, and a broad range of creative services including branding, video production, SEO, and print. The company targets diverse sectors such as manufacturing, education, retail, and health, positioning itself as a practical, client-focused agency with a strong regional presence. Technically, the website is built on WordPress, leveraging popular plugins like Yoast SEO, Contact Form 7, and GDPR compliance tools. The site demonstrates good mobile optimization, solid SEO practices, and moderate performance. Security-wise, HTTPS is enforced, and cookie consent mechanisms are implemented, though explicit security headers and incident response policies are absent. The security posture is generally good but could be improved by adding security headers, publishing security policies, and implementing vulnerability disclosure mechanisms. The WHOIS data is unavailable due to domain naming rules errors, which limits domain trust analysis but the website content and professional presentation support legitimacy. Overall, SEA Ltd presents a professional and trustworthy online presence with room for technical and security enhancements to further strengthen compliance and trust.

Scanned

NIS2 and GDPR posture

GDPR outside view
95/ 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

7 findings rated critical or high. Fix these first.

  1. Network security

    Services reachable from the internet are the first thing attackers probe. Anything open that does not need to be should be closed.

    • Critical

      Critical Service Exposed: MySQL

      Port 3306 (MySQL) is publicly accessible - MySQL - Database server

      What to do: Immediately restrict access to MySQL using firewall or VPN

      • NIS2 21(2)(e)
      • IR 2024/2690 6.7.2(f): Implementing Regulation (EU) 2024/2690, Annex point 6.7.2(f): Network security
      • NIST CM-7: NIST SP 800-53 Rev. 5 CM-7: Least Functionality
      • NIST SC-7: NIST SP 800-53 Rev. 5 SC-7: Boundary Protection

  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 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 X-Frame-Options header

      Prevents clickjacking attacks

      What to do: Add "X-Frame-Options: DENY" or "X-Frame-Options: SAMEORIGIN"

    • 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. 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 sea-ltd.co.uk

This scan found 24 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.

Daily monitoring

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
15
Email security
85
DNS health
70
Network security
0
GDPR outside view
95
Average
52
After the cap
49

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 · found on this site
  • 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

SEA Ltd operates as a service-based marketing agency with a focus on communication workshops and consultancy. Their competitive advantage lies in their workshop-driven approach to uncovering client insights and delivering tailored communication strategies. The company serves a broad range of sectors, indicating a diversified client base. Revenue streams likely derive from consultancy fees, creative service contracts, and workshop facilitation. The presence of detailed case studies and active social media links suggests a mature marketing strategy. No parent or subsidiary companies are identified, indicating an independent operation. Growth indicators include a comprehensive service offering and a well-maintained digital presence.

Security posture

The website enforces HTTPS and uses cookie consent tools aligned with GDPR requirements, indicating a baseline compliance with privacy regulations. The presence of Wordfence scripts suggests active security plugin use. However, the absence of explicit security headers (CSP, HSTS, etc.) and lack of published security or incident response policies represent gaps in security maturity. No vulnerability disclosure or security.txt files were found, limiting transparency for security researchers. No exposed sensitive data or vulnerable libraries were detected in the HTML content. Overall, the security posture is moderate with opportunities for improvement in policy transparency and technical hardening.

Recommendations

  1. Implement HTTP security headers such as Content Security Policy (CSP), Strict-Transport-Security (HSTS), X-Frame-Options, and X-Content-Type-Options to enhance protection against common web attacks.
  2. Publish clear security and incident response policies on the website to improve transparency and preparedness.
  3. Add a vulnerability disclosure policy and security.txt file to facilitate responsible reporting of security issues.
  4. Regularly update WordPress core, themes, and plugins to mitigate risks from known vulnerabilities.
  5. Enhance accessibility features to improve compliance with standards and user experience for all visitors.

Contact details published on the site

Addresses
Legal name
SEA Ltd
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
SEA Ltd
Description
SEA Marketing is a Kent-based design agency with over 30 years' experience in marketing and design, specializing in effective internal and external communications, workshops, consultancy, branding, video, photography, SEO, e-marketing, copywriting, exhibitions, PR, advertising, signage, and print.
Key services
Workshops, Consultancy, Research & Strategy, Branding, Video & Animation, Photography & Retouching, Literature, SEO, E-marketing, Copywriting
Content quality
excellent
Branding
consistent

Technology

Stack
WordPress, jQuery, Font Awesome, Yoast SEO, Contact Form 7, Fancybox, Moove GDPR Cookie Compliance
Platforms
WordPress CMS
Performance
moderate
Mobile
good
Accessibility
basic
SEO
good

Security

Observed score
75/100
Good practices seen
  • HTTPS enabled
  • Cookie consent mechanism
  • No exposed sensitive data in HTML
  • Use of security plugin Wordfence (indicated by script)

Analytics and tracking

Services
Google Analytics, A1 Webstats
Tracking level
moderate
Privacy practices
good

Advertising

Tracking pixels
A1 Webstats
Marketing tools
Yoast SEO, Contact Form 7, Fancybox, Moove GDPR Cookie Compliance
Transparency
good

Site quality

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

Key observations

  1. Website is fully accessible with rich content and professional design.
  2. No WAF or blocking mechanisms detected.
  3. WHOIS data is unavailable due to domain naming rules error, limiting domain trust analysis.
  4. Strong GDPR and cookie compliance with visible consent mechanisms.
  5. Multiple social media links and contact methods provided.
  6. Use of modern web technologies and WordPress CMS.
  7. No explicit security policies or incident response information found.
  8. No vulnerability disclosure or security.txt present.
  9. No certifications or security frameworks mentioned.
Technical notes

Notes

The website is built on WordPress CMS with a modern tech stack including jQuery, Font Awesome, and several well-known plugins for SEO, forms, GDPR compliance, and media display. The site uses asynchronous loading for some scripts, improving performance. CSS and JavaScript are organized and leverage CDN-hosted libraries for common frameworks. Mobile optimization is good, with responsive design and accessible navigation. Performance is moderate, with potential improvements in caching and resource optimization. No major technical debt indicators were found, but adding security headers and improving accessibility would enhance the technical robustness.
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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