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Security report for sefe-energy.nl

SEFE Energy NL · Energy · Netherlands

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

Security score

73/100

Risk levelMedium

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

SEFE Energy NL is a specialized energy supplier focused on providing business customers in the Netherlands with gas and electricity solutions, including green energy options. The company positions itself as a customer-centric and sustainability-conscious partner with over 12 years of experience. Their digital presence is modern and professional, leveraging Umbraco CMS, Vue.js, and multiple analytics and marketing tools to deliver a responsive and user-friendly website. Security posture is strong with HTTPS enforcement and cookie consent mechanisms, although some security headers could be improved. The domain registration data aligns well with the business claims, supporting legitimacy. Overall, SEFE Energy NL demonstrates a mature digital infrastructure and a trustworthy market position in the energy sector.

Scanned

NIS2 and GDPR posture

GDPR outside view
80/ 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

4 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 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. 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

  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 sefe-energy.nl

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.

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

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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
77
Security headers
25
Email security
85
DNS health
70
Network security
100
GDPR outside view
80
Average
73

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

SEFE Energy NL targets SMEs, healthcare institutions, associations, and large consumers with clear, simple energy products and services. Their business model centers on direct energy sales with an emphasis on cost efficiency and sustainability. The company benefits from a strong parent group (SEFE Group) and sister companies across Europe, enhancing its market reach and credibility. Certifications like Investors in People Gold and EcoVadis Silver reinforce their commitment to quality and sustainability. The website content and navigation support customer engagement and conversion through online quote requests and account management portals.

Security posture

The website employs HTTPS with good SSL configuration and uses consent management for cookies, reflecting GDPR compliance. However, explicit security headers such as Content-Security-Policy and X-Frame-Options are not evident, representing an area for improvement. No vulnerabilities or exposed sensitive data were detected in the HTML content. The absence of a public security policy or incident response page suggests room to enhance transparency and readiness. Overall, the security posture is solid but could benefit from additional hardening and disclosure.

Recommendations

  1. Implement and enforce Content-Security-Policy, X-Frame-Options, and X-Content-Type-Options headers to enhance security.
  2. Publish a dedicated security policy and incident response information to improve transparency and trust.
  3. Consider adding a vulnerability disclosure policy or security.txt file to facilitate responsible reporting.
  4. Regularly audit third-party scripts and libraries to ensure no vulnerabilities are introduced.
  5. Enhance monitoring and logging capabilities to detect and respond to security incidents promptly.

Contact details published on the site

Addresses
Legal name
SEFE Energy NL
Registration number
55351727
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
SEFE Energy NL
Description
Specialist in zakelijke energie voor bedrijven. Snel, simpel, duidelijk. Ontdek wat wij voor jouw bedrijf kunnen betekenen.
Key services
Business electricity supply, Business gas supply, Green energy options, Online quotation and contract management
Content quality
good
Branding
consistent

Technology

Stack
JavaScript, Google Tag Manager, Matomo Analytics, LiveChat, CookieControl, Convert Experiences, Trustpilot widget
Frameworks
Vue.js
Platforms
Umbraco CMS
Performance
fast
Mobile
good
Accessibility
good
SEO
good

Security

Observed score
85/100
Good practices seen
  • HTTPS enforced
  • Consent management for cookies
  • No exposed sensitive data in HTML
  • Use of secure cookies and consent update via GTM

Analytics and tracking

Services
Google Analytics, Matomo, Hotjar
Tracking level
moderate
Privacy practices
good

Advertising

Ad networks
Google Ads (AW-965702513)
Tracking pixels
Google Analytics (gtag.js), Matomo, Hotjar, LiveChat tracking
Marketing tools
Convert Experiences, Trustpilot widget
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. Clear focus on business energy supply in the Netherlands.
  3. Strong emphasis on customer service and sustainability.
  4. Comprehensive cookie and privacy policies with consent management.
  5. Use of modern web technologies and analytics tools.
  6. No signs of malicious or suspicious content.
  7. Multiple trust and certification badges displayed.
  8. Active social media presence on LinkedIn.
Technical notes

Notes

The website is built on Umbraco CMS with Vue.js components, leveraging modern JavaScript and CSS features for a responsive and accessible user experience. Performance is optimized with preloading fonts, asynchronous script loading, and CDN usage. Analytics and marketing integrations include Google Tag Manager, Matomo, Hotjar, and Trustpilot widgets, supporting data-driven decision making. The site is mobile-optimized and includes accessibility features such as skip links and ARIA labels. Technical debt appears low, with opportunities to improve security headers and further streamline third-party dependencies.
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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