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Security report for frse.dk

Fredericia Spildevand og Energi A/S · Energy · Denmark

Medium risk. 5 critical or high findings in Security headers and SSL/TLS.

Security score

69/100

Risk levelMedium

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

Fredericia Spildevand og Energi A/S is a municipal utility company based in Denmark, specializing in the transport, treatment, and energy production from wastewater within Fredericia Kommune. The company operates as a key player in the local water cycle, providing essential environmental and energy services to residents and businesses in the region. Their website reflects a professional and consistent brand presence, targeting local customers with clear service information and support channels. Technically, the website is built on modern web technologies including Alpine.js and Tiny Slider, with Umbraco CMS likely powering the backend. The site is mobile-optimized, accessible, and incorporates privacy-compliant analytics via Plausible. Cookie consent is actively managed with a detailed banner and declaration, supporting GDPR compliance. Performance is moderate, with good SEO and accessibility features. From a security perspective, the site enforces HTTPS and uses cookie consent mechanisms effectively. However, explicit security headers such as Content-Security-Policy and X-Frame-Options are not evident and could be improved. There is no visible security policy or incident response contact information, which are areas for enhancement. No vulnerabilities or suspicious patterns were detected. Overall, the website demonstrates a solid security posture and compliance with privacy regulations, supporting a trustworthy user experience. The domain registration data aligns well with the business claims, reinforcing legitimacy. Strategic improvements in security headers and transparency policies would further strengthen the site’s security and compliance standing.

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

5 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 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';…

  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 frse.dk

This scan found 22 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
57
Security headers
15
Email security
85
DNS health
75
Network security
100
GDPR outside view
83
Average
69

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

Fredericia Spildevand og Energi A/S holds a stable position as a local municipal utility provider in the energy and wastewater sector. Their business model focuses on essential public services, including wastewater transport, treatment, and energy recovery. The company targets residents and industrial customers within Fredericia Kommune, offering services that support environmental sustainability and energy efficiency. The website content and structure indicate a focus on transparency and customer support, with detailed service descriptions and contact options. The absence of social media and limited direct contact details suggests a traditional utility approach rather than aggressive marketing. The company appears to maintain partnerships with service providers like Cookie Information and KMD for analytics and customer self-service platforms, indicating a mature operational ecosystem.

Security posture

The website exhibits a good security maturity level with mandatory HTTPS encryption and a robust cookie consent mechanism that aligns with GDPR requirements. No exposed sensitive data or vulnerable libraries were detected in the provided content. However, the lack of explicit security headers such as Content-Security-Policy, X-Frame-Options, and Referrer-Policy represents a compliance gap that could expose the site to certain web-based attacks. There is no published security policy or incident response contact, which limits transparency and readiness for security incidents. The site does not appear to have a vulnerability disclosure program or security.txt file, which are best practices for modern security culture. Overall, the security posture is solid but could benefit from enhanced header policies and formal incident response documentation.

Recommendations

  1. Implement comprehensive security headers including Content-Security-Policy, X-Frame-Options, and Referrer-Policy to mitigate common web vulnerabilities.
  2. Publish a clear security policy and provide dedicated incident response contact channels to improve transparency and readiness.
  3. Establish a vulnerability disclosure program or security.txt file to encourage responsible reporting of security issues.
  4. Enhance contact information by including verified company emails and phone numbers for customer and security inquiries.
  5. Regularly audit and update third-party scripts and libraries to ensure no vulnerabilities are introduced.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
Fredericia Spildevand og Energi A/S
Description
Fredericia Spildevand og Energi A/S transporterer, renser og producerer energi af det spildevand, der ledes i kloakken i Fredericia Kommune.
Key services
Wastewater transport, Wastewater treatment, Energy production from wastewater
Content quality
good
Branding
consistent

Technology

Stack
JavaScript, CSS, HTML5, Plausible Analytics, CookieInformation Consent Management
Frameworks
Alpine.js (x-data, x-show directives), Tiny Slider (tns-carousel)
Performance
moderate
Mobile
good
Accessibility
good
SEO
good

Security

Observed score
80/100
Good practices seen
  • HTTPS enforced
  • Cookie consent with opt-in/out
  • No exposed sensitive data in HTML
  • No vulnerable libraries detected

Analytics and tracking

Services
Plausible Analytics
Tracking level
minimal
Privacy practices
good

Advertising

Tracking pixels
Plausible Analytics
Transparency
good

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. Cookie consent mechanism is implemented with detailed cookie declaration
  3. No explicit privacy policy URL found but privacy information is present on 'Om os' pages
  4. No terms of service or security policy pages detected
  5. Contact information is available via contact page with form
  6. No phone numbers or emails explicitly found in the HTML content provided
  7. No social media links detected
  8. Website uses modern JavaScript frameworks and analytics tools
  9. HTTPS is enabled and domain is active with no DNSSEC
  10. No WAF or blocking mechanisms detected
Technical notes

Notes

The website is built using modern front-end technologies such as Alpine.js for reactive components and Tiny Slider for carousel functionality. It leverages Umbraco CMS, as indicated by domain patterns, which is a robust platform for content management. The site uses Plausible Analytics, a privacy-focused analytics tool, and Cookie Information for consent management, reflecting a commitment to privacy compliance. The site is mobile-optimized and accessible, with good SEO practices including meta tags and Open Graph data. Performance is moderate, with preloading of critical CSS and JS assets. No major technical debt or outdated technologies were detected, but there is room for improvement in security header implementation and explicit hosting provider identification.
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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