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Security report for klenk.at

Klenk & Meder GmbH · Energy · Austria

High risk. 10 critical or high findings in GDPR outside view, SSL/TLS and 2 other checks.

Security score

28/100

Risk levelHigh

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

Klenk & Meder GmbH is a well-established Austrian family-owned company specializing in electrical engineering services with over 55 years of experience and a workforce of approximately 750 employees. The company offers a broad range of services including electrical installation, network technology, photovoltaic systems, maintenance, and sales of electrical materials and devices. Their market position is strong within Austria, supported by a network of subsidiaries and partners. The website is professionally designed, content-rich, and targets both private and business customers as well as apprentices. Technically, the site is built on TYPO3 CMS with modern JavaScript libraries and good SEO practices, but suffers from a critical lack of HTTPS security due to an invalid or missing SSL certificate. The security posture is weak, lacking HTTPS and advanced security headers, which poses a significant risk. Privacy compliance is well addressed with a comprehensive cookie consent mechanism and GDPR-aligned privacy policy. Overall, the business credibility is high with clear contact information, certifications, and trust signals. Strategic improvements in security infrastructure are recommended to enhance trust and protect user data.

Scanned

NIS2 and GDPR posture

GDPR outside view
0/ 100 · Critical
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

10 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

    • Critical

      No HTTPS encryption

      GDPR requires appropriate security measures for personal data

      What to do: Implement SSL/TLS certificate for HTTPS

  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.

    • Critical

      No HTTPS Encryption

      Website does not use HTTPS encryption, making all data transmission vulnerable to interception

      What to do: Implement SSL/TLS certificate and redirect all HTTP traffic to HTTPS

  3. 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: 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

  4. 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

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

Keep watching klenk.at

This scan found 20 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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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
0
Security headers
30
Email security
50
DNS health
85
Network security
0
GDPR outside view
0
Average
28

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

The company operates in the energy sector focusing on electrical engineering and related services. Its business model combines service provision with product sales, targeting both private and commercial clients. The firm has a strong regional presence in Austria with a large employee base and a history of training over 1,000 apprentices. Partnerships and subsidiaries such as Maroscheck GmbH, Elektro Ebner GmbH, and Compact Electric expand its market reach. The company leverages digital marketing and social media effectively, maintaining active profiles on major platforms. The website supports customer engagement with detailed service descriptions, project references, and career opportunities. The presence of a dedicated online shop and integration with EP: Klenk & Meder indicates diversified revenue streams. The company’s strategic focus on innovation and training supports sustainable growth and market competitiveness.

Security posture

The website’s security posture is currently weak due to the absence of a valid SSL certificate and HTTPS support, which is a critical vulnerability. While some security headers like X-Content-Type-Options are present, important protections such as HSTS, Content-Security-Policy, and OCSP stapling are missing. The site uses HttpOnly and SameSite cookies, which is positive. No known vulnerabilities or malware were detected in the scripts or libraries used. The cookie consent mechanism is robust and GDPR compliant, but the lack of HTTPS undermines overall security and user trust. No explicit security or incident response policies are published on the site, indicating a potential gap in security governance. Immediate remediation of SSL issues and enhancement of security headers are essential to improve the security posture and protect user data.

Recommendations

  1. Obtain and properly configure a valid SSL/TLS certificate to enable HTTPS across the entire site.
  2. Implement HTTP Strict Transport Security (HSTS) with includeSubDomains and preload directives.
  3. Add security headers such as Content-Security-Policy, X-Frame-Options, and Referrer-Policy.
  4. Publish a security policy and vulnerability disclosure or security.txt file to improve transparency.
  5. Regularly audit and update third-party libraries and scripts to mitigate potential vulnerabilities.

Contact details published on the site

Addresses
Legal name
Klenk & Meder GmbH
Technical notes

Notes

The website is hosted on an Apache server with DNS managed by A1.net. It uses TYPO3 CMS, a mature and extensible content management system, combined with modern JavaScript libraries like Swiper and ScrollTrigger for UI enhancements. SEO is enhanced by Yoast SEO for TYPO3 and structured data in JSON-LD format. The site is mobile responsive and optimized for user experience, but performance metrics are missing or indicate slow loading. The absence of HTTPS is a major technical deficiency. The site uses a cookie consent management system with granular controls for marketing, Facebook, YouTube, and functional cookies. Hosting and DNS configurations appear standard and consistent with the business profile. Overall, the technical infrastructure is solid but requires urgent security upgrades and performance optimization.
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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