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Security report for bigadan.com

Bigadan A/S · Energy · Denmark

Medium risk. 4 critical or high findings in GDPR outside view, Email security and 1 other check.

Security score

65/100

Risk levelMedium

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

Bigadan A/S is a Denmark-based company specializing in the development, construction, operation, and ownership of modular biogas systems and circular energy ecosystems. With over 40 years of experience, the company serves industrial, agricultural, municipal, and energy consumer clients by providing end-to-end solutions including biomass sourcing, biogas plant construction, biomethane production, biogenic CO2 capture, and nutrient-rich fertilizer production. The website reflects a mature and professional business with a strong market position in the renewable energy sector. Technically, the website is well-implemented with modern technologies, fast performance, and excellent mobile optimization. Security posture is good with HTTPS enforced and domain transfer protections, though DNSSEC is not enabled and some security headers are missing. Privacy compliance is strong with clear privacy and cookie policies, though no explicit consent mechanism is present. Contact is primarily via web forms, with no direct emails or phone numbers published. Overall, the site is trustworthy, professional, and aligned with industry standards.

Scanned

NIS2 and GDPR posture

GDPR outside view
68/ 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

4 findings rated critical or high. Fix these first.

  1. 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

  2. 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 DMARC record found

      DMARC provides email authentication and reporting

      What to do: Add DMARC record: "v=DMARC1; p=none; rua=mailto:dmarc@yourdomain.com"

  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
    • High

      Weak SSL Key Length

      SSL certificate uses 384-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 bigadan.com

This scan found 18 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

€25per month

  • TLS certificates and expiry
  • DNS records
  • SPF, DKIM and DMARC
  • Security headers
  • GDPR and NIS2 posture
  • Exposed services
  • Third-party trackers
  • Security score drift

Email alerts on material changes and an exportable JSON history of every change.

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Full report

€39.90one-time

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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
52
Security headers
85
Email security
65
DNS health
80
Network security
40
GDPR outside view
68
Average
65

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

Bigadan operates in the energy sector focusing on circular energy and biogas solutions. Their business model involves designing, building, operating, and owning biogas plants and related ecosystems. The company targets a global market with local anchoring, serving agriculture, industry, and metropolitan waste streams. Their competitive advantage lies in their modular, scalable technology and long-term partnerships. The company emphasizes sustainability, profitability, and innovation, supported by case studies and testimonials. The absence of direct contact details suggests a controlled communication approach. The company appears medium-sized with a solid reputation and no apparent red flags in domain registration or web presence.

Security posture

The website uses HTTPS with a valid SSL certificate and has domain transfer protection enabled. However, DNSSEC is not enabled, which could improve DNS security. No explicit security headers like Content-Security-Policy or X-Frame-Options were detected in the provided data. No vulnerability disclosures or incident response contacts are published, which could be improved. No exposed sensitive data or vulnerable libraries were found. The site does not appear to use tracking or analytics scripts that could introduce privacy risks. Overall, the security posture is good but could benefit from enhanced DNS security and published security policies.

Recommendations

  1. Enable DNSSEC to enhance domain name system security.
  2. Implement and publish security headers such as Content-Security-Policy and X-Frame-Options.
  3. Add an incident response page or contact channel for security issues.
  4. Consider adding a cookie consent mechanism to comply with GDPR requirements fully.
  5. Publish a terms of service page to clarify user agreements and liabilities.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
Bigadan A/S
Description
We develop, construct, operate and own end-to-end biogas systems. We work across every step — from biomass sourcing and waste management to the delivery of biogas, biogenic CO2 and nutrient-rich biofertiliser.
Key services
Biowaste & waste handling, Biogas Plants, Biomethane production and delivery, Biogenic CO2 capture and utilization, Nutrient-rich fertilizer production
Content quality
excellent
Branding
consistent

Technology

Stack
JavaScript, HTML5, CSS3, IntersectionObserver, imgix (image CDN), b-cdn.net (video CDN)
Performance
fast
Mobile
excellent
Accessibility
good
SEO
good

Security

Observed score
85/100
Good practices seen
  • HTTPS enforced
  • Domain status clientTransferProhibited
  • No exposed emails in HTML
  • No inline sensitive data

Analytics and tracking

Tracking level
minimal
Privacy practices
good

Advertising

Transparency
poor

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-structured.
  2. Content is comprehensive and focused on circular energy and biogas solutions.
  3. No direct contact emails or phone numbers visible; contact via form only.
  4. No explicit security or incident response policies published.
  5. No terms of service page found.
  6. No advertising or tracking scripts detected.
  7. No analytics scripts detected.
  8. No vulnerability disclosure or security.txt found.
  9. No social media links except LinkedIn.
  10. No exposed sensitive data or security issues found.
Technical notes

Notes

The website uses modern web technologies including HTML5, CSS3, and JavaScript with IntersectionObserver for lazy loading and video handling. Images and videos are served via CDN providers (imgix and b-cdn.net) for performance optimization. The site is mobile-optimized with responsive design and good accessibility features. No CMS or major frameworks were detected, suggesting a custom or static site approach. Performance is fast with preconnect and dns-prefetch hints. No analytics or tracking scripts were found, indicating a privacy-conscious implementation. The technical infrastructure is solid with room for security header improvements.
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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