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Security report for isoplus.de

ISOPLUS Group · Energy · Germany

High risk. 6 critical or high findings in Network security, Security headers and 2 other checks.

Security score

49/100

Risk levelHigh

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

ISOPLUS Group is a large European manufacturer specializing in pre-insulated pipe systems for district heating, cooling, industry, solar thermal, bioenergy, agriculture, and CCS sectors. The company operates in over 30 countries with a workforce of approximately 1,600 professionals and is part of the Viessmann Generations Group. Their website is professionally designed, multilingual, and provides comprehensive information about their products, services, and corporate profile. Technically, the site is built on TYPO3 CMS, uses modern web technologies, and integrates Google Analytics and Tag Manager for user tracking. Security-wise, the site enforces HTTPS and implements a cookie consent mechanism, but lacks explicit security policies and incident response contacts. WHOIS data is privacy protected, which is justified for a business of this scale. Overall, the website demonstrates a mature digital presence with good privacy compliance and a strong business credibility profile.

Scanned

NIS2 and GDPR posture

GDPR outside view
68/ 100 · Medium
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. 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
    • Critical

      Critical Service Exposed: PostgreSQL

      Port 5432 (PostgreSQL) is publicly accessible - PostgreSQL - Database server

      What to do: Immediately restrict access to PostgreSQL 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 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

  4. 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 isoplus.de

This scan found 17 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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  • 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
82
Security headers
80
Email security
85
DNS health
85
Network security
0
GDPR outside view
68
Average
67
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

ISOPLUS Group holds a strong market position in the energy infrastructure sector, focusing on manufacturing and supplying pipe systems critical for renewable energy distribution and industrial applications. Their business model centers on product innovation and extensive geographic reach across Europe and beyond. The company benefits from its association with the Viessmann Generations Group, enhancing its credibility and resource base. The website's multilingual support and detailed product portfolio indicate a customer-centric approach targeting energy companies, industrial clients, and infrastructure projects. The presence of digital tools and a campus section suggests investment in customer engagement and education. Strategic partnerships with digital service providers support their operational ecosystem.

Security posture

The website maintains a good security posture with enforced HTTPS and a robust cookie consent framework aligned with GDPR requirements. No critical vulnerabilities or exposed sensitive data were detected in the HTML content. However, the absence of security headers and explicit security or incident response policies represents an area for improvement. The lack of a vulnerability disclosure program or security.txt file limits transparency for security researchers. Overall, the security maturity is moderate to good but could be enhanced by adopting additional best practices and publishing clear security policies.

Recommendations

  1. Implement HTTP security headers such as Content-Security-Policy, X-Frame-Options, and X-Content-Type-Options to strengthen browser security.
  2. Publish a dedicated security policy and incident response contact information on the website to improve transparency and readiness.
  3. Establish a vulnerability disclosure program or security.txt file to facilitate responsible reporting of security issues.
  4. Regularly audit and update third-party scripts, including Google Analytics and Tag Manager, to mitigate potential vulnerabilities.
  5. Enhance contact information by including direct company emails and phone numbers for sales, support, and security inquiries.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
ISOPLUS Group
Description
Wir machen als Hersteller für vorgedämmte Rohrsysteme die Energiewende in Europa möglich.
Key services
Manufacture of rigid and flexible pipe systems, Network monitoring, Prefabricated fittings and assembly parts, Industrial pipes, Accessories and tools
Content quality
excellent
Branding
consistent

Technology

Stack
TYPO3 CMS, Bootstrap, Google Analytics, Google Tag Manager, JavaScript, CSS
Frameworks
TYPO3
Performance
moderate
Mobile
good
Accessibility
good
SEO
good

Security

Observed score
85/100
Good practices seen
  • HTTPS enforced
  • Cookie consent with opt-in/out
  • No exposed sensitive data in HTML

Analytics and tracking

Services
Google Analytics
Tracking level
moderate
Privacy practices
good

Advertising

Transparency
good

Site quality

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

Key observations

  1. Website is fully accessible with no blocking or WAF challenges.
  2. Content is professional, well-structured, and business-focused on energy pipe systems.
  3. Strong GDPR and cookie consent compliance observed.
  4. No exposed sensitive data or security vulnerabilities detected in HTML.
  5. WHOIS data is privacy protected or unavailable, but no suspicious patterns found.
  6. Use of modern CMS TYPO3 and integration of Google Analytics and Tag Manager for tracking.
  7. Multiple language and regional versions available indicating international presence.
  8. No direct contact emails or phone numbers found in HTML; contact via web form.
  9. No explicit security policy or incident response contacts published.
  10. No security.txt or vulnerability disclosure page found.
Technical notes

Notes

The website is built on TYPO3 CMS, a mature and widely used content management system, ensuring a solid technical foundation. It uses Bootstrap for responsive design and integrates Google Analytics and Google Tag Manager for analytics and marketing. The site loads scripts and stylesheets efficiently with preloading and merging techniques, indicating attention to performance optimization. Mobile optimization and accessibility features are well implemented, providing a good user experience across devices. The site structure is clear with well-organized navigation and multilingual support. No major technical debt or outdated technologies were detected, though adding security headers and further performance tuning could enhance robustness.
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

Earlier scans of this domain

  1. 49/100High29 findingsView report
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