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Security report for isoplus.de

ISOPLUS · 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 is a large German-based manufacturer specializing in pre-insulated pipe systems that support the energy transition across Europe. The company offers a comprehensive product portfolio including rigid and flexible pipe systems, network monitoring, and related accessories. It serves over 30 countries and is part of the Viessmann Generations Group, indicating strong market positioning and corporate backing. The website is professionally designed, multilingual, and provides detailed business and product information targeting energy infrastructure and industrial clients. Technically, the site is built on TYPO3 CMS, uses modern web technologies, and integrates Google Analytics and Tag Manager for traffic and engagement measurement. Security posture is solid with HTTPS and cookie consent mechanisms, though improvements in security headers and explicit incident response policies are recommended. Overall, the website reflects a mature digital presence with good privacy compliance and business credibility.

Scanned

This is an earlier scan of isoplus.de. View the latest report

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

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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
75
DNS health
75
Network security
0
GDPR outside view
68
Average
63
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 operates in the energy sector focusing on district heating, cooling, bioenergy, and industrial applications. Its business model centers on manufacturing and supplying advanced pipe systems tailored to renewable energy and infrastructure projects. The company benefits from a broad European footprint and a strong parent company, Viessmann Generations Group, which enhances its market credibility. The website's content and structure indicate a focus on B2B customers, including energy providers and industrial clients. The presence of digital tools and extensive product documentation supports a customer-centric approach. The company maintains active communication through news and press releases, signaling growth and strategic developments.

Security posture

The website enforces HTTPS and employs a comprehensive cookie consent mechanism aligned with GDPR requirements, reflecting a good privacy and security baseline. However, the absence of visible security headers such as Content Security Policy, HSTS, and X-Frame-Options suggests room for enhancement in mitigating common web threats. No exposed sensitive data or vulnerable libraries were detected in the HTML content. The lack of publicly available security policies or incident response contacts limits transparency in security governance. Overall, the security posture is good but could be strengthened by implementing recommended headers and publishing explicit security policies.

Recommendations

  1. Implement and enforce security headers including CSP, HSTS, X-Frame-Options, and X-XSS-Protection to enhance web security.
  2. Publish a dedicated security policy and incident response information to improve transparency and readiness.
  3. Consider adding a vulnerability disclosure program or security.txt file to facilitate responsible reporting.
  4. Enhance contact information with direct security or abuse email addresses for incident reporting.
  5. Regularly audit third-party scripts and analytics tools to ensure they do not introduce vulnerabilities.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
ISOPLUS
Description
Hersteller für vorgedämmte Rohrsysteme, ermöglicht Energiewende in Europa, beliefert über 30 Länder, mit Fokus auf Nah- und Fernwärme, Nah- und Fernkälte, Bioenergie, Landwirtschaft, Solarthermie, Industrie, CCS.
Key services
Pre-insulated pipe systems, Rigid and flexible pipe systems, Network monitoring, Prefabricated fittings and assembly parts, Tools and accessories
Content quality
excellent
Branding
consistent

Technology

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

Security

Observed score
80/100
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 rich content and navigation
  2. No WHOIS data available publicly, indicating privacy protection or registry restrictions
  3. Strong GDPR and cookie compliance with detailed consent mechanism
  4. Use of modern CMS (TYPO3) and analytics tools (Google Analytics, GTM)
  5. No direct contact emails or phone numbers found in the main HTML; contact via form only
  6. No explicit security or incident response policies published
  7. No visible security headers in HTML source; potential area for improvement
  8. Multiple language and regional versions available, indicating international presence
  9. Parent company acquisition news prominently displayed, indicating recent corporate changes
Technical notes

Notes

The website is built on TYPO3 CMS, a robust and widely used content management system, indicating a mature technical infrastructure. It uses Bootstrap for responsive design and integrates Google Tag Manager and Google Analytics for marketing and analytics purposes. The site is multilingual with clear navigation and well-structured content, supporting good SEO and accessibility. Performance is moderate with room for optimization, especially in script loading and asset management. The cookie consent implementation is comprehensive and inline with modern privacy standards. No critical technical debt or outdated technologies were identified, suggesting a well-maintained platform.
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. 49/100High26 findingsView report
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