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Security report for tesvolt-projects.com

TESVOLT AG · Energy · Germany

High risk. 9 critical or high findings in Network security, Security headers and 3 other checks.

Security score

49/100

Risk levelHigh

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

TESVOLT Projects is a specialized full-service provider focused on battery parks and energy storage solutions tailored for municipal utilities. The company offers comprehensive services from planning through operation, leveraging deep expertise in storage technology and municipal project experience. Their market position is supported by multiple references and partnerships with notable industry players. The website is professionally designed, mobile-optimized, and provides clear navigation and relevant content for its target audience in the energy sector. Technically, the site uses the CIDEMOS CMS platform with modern web technologies and integrates Google Tag Manager for analytics and marketing. Security posture is generally good with HTTPS enforced and cookie consent implemented, though the absence of security headers and published security policies suggests room for improvement. The WHOIS data for the domain is missing, which slightly reduces trustworthiness, but the website content and business information align well with the TESVOLT AG brand. Overall, the site demonstrates a solid digital presence with good privacy compliance and business credibility.

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

9 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: SMB

      Port 445 (SMB) is publicly accessible - SMB - Windows file sharing, high risk

      What to do: Immediately restrict access to SMB 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
    • 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 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. 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

Need hands-on remediation? Email guard@offseq.com

Keep watching tesvolt-projects.com

This scan found 26 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

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

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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
72
Security headers
60
Email security
55
DNS health
60
Network security
0
GDPR outside view
80
Average
55
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

TESVOLT Projects operates in the energy sector, focusing on battery storage solutions for municipal utilities. Their business model centers on providing end-to-end project services including realization, maintenance, and energy trading integration. The company targets municipal utilities and energy market participants, emphasizing cost-effectiveness and reliability. Their partnerships with TESVOLT Energy and other industry leaders enhance their competitive advantage. The presence of client testimonials and detailed project references indicates a mature market presence. The company appears medium-sized, based in Germany, with a consistent brand and professional online presence. Growth indicators include active social media channels and a clear focus on integrating energy trading to maximize profitability for clients.

Security posture

The website employs HTTPS with a valid SSL configuration, ensuring secure communication. Cookie consent mechanisms are in place, supporting GDPR compliance. However, no explicit security headers such as Content-Security-Policy or X-Frame-Options were detected, which could enhance protection against common web attacks. There is no published security policy or incident response contact information, which are important for transparency and readiness. No vulnerabilities or exposed sensitive data were found in the analysis. Overall, the security posture is good but could be strengthened by implementing additional HTTP security headers and publishing formal security policies.

Recommendations

  1. Implement HTTP security headers including Content-Security-Policy, X-Frame-Options, and X-Content-Type-Options to enhance web security.
  2. Publish a clear security policy and incident response contact information on the website to improve transparency and preparedness.
  3. Investigate and resolve the missing WHOIS data issue to improve domain trustworthiness and legitimacy.
  4. Regularly audit third-party scripts and libraries to ensure no vulnerabilities are introduced.
  5. Enhance accessibility features to improve compliance and user experience for all visitors.

Contact details published on the site

Addresses
Legal name
TESVOLT AG
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
TESVOLT AG
Description
TESVOLT Projects is a full-service provider specializing in battery parks and energy storage solutions for municipal utilities. They offer planning, implementation, and operation services with expertise in storage technology and municipal projects.
Key services
Battery park planning and implementation, Energy storage solutions, Project realization and maintenance, Energy trading integration
Content quality
good
Branding
consistent

Technology

Stack
CIDEMOS CMS, Google Tag Manager, FontAwesome, Lazy loading images, JavaScript, CSS3
Performance
moderate
Mobile
good
Accessibility
basic
SEO
good

Security

Observed score
85/100
Good practices seen
  • HTTPS enforced
  • Cookie consent mechanism implemented
  • No exposed sensitive data found

Analytics and tracking

Services
Google Tag Manager
Tracking level
moderate
Privacy practices
good

Advertising

Ad networks
Google Ads
Transparency
good

Site quality

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

Key observations

  1. Website is fully accessible with rich content and professional design
  2. No WHOIS data available indicating possible domain registration issues or query failure
  3. Cookie consent and privacy policy are implemented and GDPR compliant
  4. Social media presence is active and linked
  5. No security policy or incident response info published
  6. No visible security headers detected in provided data
  7. Use of CIDEMOS CMS and modern web technologies
  8. Good SEO and structured data usage
Technical notes

Notes

The website is built on the CIDEMOS CMS platform version 1.3.1-80, utilizing modern web technologies such as lazy loading for images, FontAwesome icons, and Google Tag Manager for analytics and marketing. The site is mobile-optimized with responsive design and good SEO practices including meta tags and structured data (JSON-LD). Performance is moderate with efficient image handling but could benefit from further optimization. No major technical debt or outdated technologies were detected. Hosting provider details are not explicitly available. Overall, the technical infrastructure supports a professional and functional online presence suitable for the company's business needs.
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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