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Security report for swk.de

Stadtwerke Krefeld · Energy · Germany

Medium risk. 6 critical or high findings in GDPR outside view, Security headers and 1 other check.

Security score

68/100

Risk levelMedium

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

Stadtwerke Krefeld (SWK) is a regional utility provider in Germany offering a broad range of services including electricity, gas, heat, water, mobility, and waste management primarily serving private and business customers in Krefeld and the Niederrhein region. The company positions itself as a strong local partner with a focus on sustainable energy solutions such as 100% TÜV-certified green electricity and innovative mobility offerings including car sharing and public transport services. The website reflects a professional and modern digital presence built on Next.js with a focus on user experience and accessibility. Security posture is solid with HTTPS and cookie consent mechanisms in place, though explicit privacy policies and security disclosures are not prominently found. The domain is hosted on Vodafone IP infrastructure and appears legitimate with consistent branding and partner ecosystem integration. Overall, SWK demonstrates a mature business and digital infrastructure with room for improvement in transparency around privacy and security policies.

Scanned

NIS2 and GDPR posture

GDPR outside view
33/ 100 · High
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

6 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.

    • Critical

      EU business without adequate privacy measures

      EU businesses are subject to strict GDPR requirements

      What to do: Implement comprehensive GDPR compliance including privacy policy, cookie consent, and data protection measures

    • 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

      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. 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"

  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 swk.de

This scan found 19 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

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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
62
Security headers
75
Email security
70
DNS health
65
Network security
100
GDPR outside view
33
Average
68

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

SWK operates in the energy and transportation sectors, targeting residential and commercial customers in a defined geographic region. Their competitive advantage lies in offering integrated utility services combined with mobility solutions, leveraging local market knowledge and sustainability credentials. Revenue streams likely include energy sales, mobility subscriptions, and waste management fees. The company maintains partnerships with local service providers and event organizers, enhancing community engagement. Growth indicators include digital service portals and app offerings. The business model is utility-centric with diversification into mobility and digital services, positioning SWK as a comprehensive regional service provider.

Security posture

The website employs HTTPS and integrates a reputable cookie consent tool (Usercentrics), indicating awareness of privacy and security compliance. However, the absence of explicit privacy policies, terms of service, security policies, and incident response contacts limits transparency and may pose compliance risks under GDPR and related regulations. No security.txt or vulnerability disclosure mechanisms were found, which could hinder responsible vulnerability reporting. Security headers and advanced protections are not evident from the HTML content. Overall, the security posture is moderate with good foundational practices but lacking in formal documentation and disclosure.

Recommendations

  1. Publish a comprehensive privacy policy and terms of service prominently linked on the website.
  2. Implement and disclose a formal security policy and incident response procedures including contact channels.
  3. Add a security.txt file to facilitate vulnerability disclosure and improve security transparency.
  4. Enhance security headers (CSP, HSTS, X-Frame-Options) to strengthen protection against common web attacks.
  5. Improve visibility of contact information including official emails and phone numbers for customer and security inquiries.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
Stadtwerke Krefeld
Description
Die Stadtwerke Krefeld sind Ihr starker Partner auf dem deutschen Energiemarkt. In Krefeld und am Niederrhein sind sie als Umsorger mit Wasser, Entsorgung und Verkehr aktiv.
Key services
Electricity supply including green energy, Gas supply, Heat supply, Water services, Mobility services including public transport, car sharing, e-mobility, Waste disposal and recycling, Customer service and online portals
Content quality
good
Branding
consistent

Technology

Stack
React (Next.js), Headless UI, Usercentrics (cookie consent), SVG icons, Video media, CSS modules
Frameworks
Next.js
Performance
moderate
Mobile
good
Accessibility
good
SEO
good

Security

Observed score
85/100
Good practices seen
  • HTTPS enforced
  • No exposed sensitive data in HTML
  • Use of cookie consent tool

Analytics and tracking

Tracking level
minimal
Privacy practices
basic

Advertising

Tracking pixels
Usercentrics
Marketing tools
Usercentrics cookie consent
Transparency
basic

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. Content is comprehensive for private customers with clear navigation.
  3. Cookie consent is implemented via Usercentrics.
  4. No explicit privacy policy or terms of service links found in provided HTML snippet.
  5. No direct contact emails or phone numbers found in the analyzed content.
  6. Multiple external links to partner and related service domains.
  7. Use of modern web technologies and frameworks.
  8. No security.txt or vulnerability disclosure information found.
  9. No signs of adult or questionable content.
  10. WHOIS data is limited but domain appears stable and legitimate.
Technical notes

Notes

The website is built using modern web technologies including Next.js and React, with modular CSS and SVG icons for scalable graphics. Hosting is provided via Vodafone IP nameservers, indicating a stable and professional infrastructure. Performance is moderate with use of video backgrounds and responsive design ensuring good mobile experience. Accessibility features such as focus outlines and ARIA attributes are present. SEO is supported by meta tags and Open Graph data. The site uses Usercentrics for cookie consent management, aligning with privacy regulations. Technical risks are minimal but could be mitigated by adding security headers and formalizing privacy and security documentation.
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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