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Security report for isoplus.nl

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 prominent European manufacturer specializing in pre-insulated piping systems that support the energy transition across multiple sectors including district heating, cooling, bioenergy, solar heating, industry, and carbon capture and storage (CCS). The company operates in over 30 countries with a large workforce and is part of the Viessmann Generations Group, indicating a strong market position and backing. The website is professionally designed using TYPO3 CMS, featuring comprehensive product portfolios, service offerings, and multilingual support, reflecting a mature digital presence. Security-wise, the site enforces HTTPS and implements GDPR-compliant cookie consent mechanisms, though it lacks explicit security policies and incident response contacts. No critical vulnerabilities or exposed sensitive data were detected. Overall, ISOPLUS presents a credible and trustworthy business front with room for improvement in security transparency and incident readiness.

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.nl

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
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 targets energy infrastructure and renewable energy sectors, offering tailored piping solutions and extensive consulting services. Its competitive advantage lies in its broad European footprint, diversified product portfolio, and integration within a larger corporate group. The business model focuses on manufacturing high-quality piping systems combined with comprehensive customer support. The presence of multiple country-specific domains suggests a localized approach to market penetration. The company maintains a professional online presence with regular news updates and press releases, signaling active engagement and growth. Partnerships with technology providers like sgalinski for web development further enhance its digital capabilities.

Security posture

The website demonstrates a solid security foundation with HTTPS and cookie consent compliance. However, the absence of security headers such as Content-Security-Policy and lack of published security policies or incident response contacts indicate areas for enhancement. No signs of malware, phishing, or exposed credentials were found. The WHOIS data is privacy protected, which is typical for corporate domains but limits transparency. The site uses third-party analytics and tag management tools, which are managed with user consent. Overall, the security posture is good but could benefit from improved transparency and formalized security documentation.

Recommendations

  1. Implement and publish a comprehensive security policy and incident response contact information on the website.
  2. Add security headers like Content-Security-Policy, X-Frame-Options, and Strict-Transport-Security to enhance protection.
  3. Create and maintain a vulnerability disclosure policy or security.txt file to facilitate responsible reporting.
  4. Provide clear company contact emails and phone numbers for security and general inquiries to improve trust.
  5. Regularly audit and update third-party scripts and analytics tools to mitigate potential vulnerabilities.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
ISOPLUS
Description
As a manufacturer of pre-insulated piping systems, ISOPLUS enables the energy transition in Europe by supplying high-quality piping systems for district heating, cooling, bioenergy, solar heating, industry, and CCS.
Key services
Pre-insulated piping systems, Rigid and flexible pipe systems, Leak detection, Factory-supplied fittings and assembly fittings, Consulting and support services
Content quality
excellent
Branding
consistent

Technology

Stack
TYPO3 CMS, Google Analytics, Google Tag Manager, Bootstrap, JavaScript
Frameworks
TYPO3
Performance
moderate
Mobile
good
Accessibility
good
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 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. Uses TYPO3 CMS with modern web technologies.
  3. Strong focus on energy sector with comprehensive product and service offerings.
  4. Good privacy and cookie compliance with explicit consent mechanisms.
  5. No explicit security policy or incident response contacts found.
  6. WHOIS data is privacy protected or unavailable, but no suspicious indicators.
  7. Website content is professional, well-structured, and multilingual support is present.
  8. No exposed sensitive data or obvious vulnerabilities detected in HTML content.
Technical notes

Notes

The website is built on TYPO3 CMS, leveraging modern web technologies including Bootstrap and JavaScript. It integrates Google Analytics and Google Tag Manager for traffic and engagement measurement, with a GDPR-compliant cookie consent mechanism. The site is mobile optimized with good accessibility and SEO practices. Performance is moderate, with room for optimization. The technical infrastructure supports a professional and scalable digital presence suitable for a large manufacturing company. Hosting provider details are not explicitly identified. Overall, the technical implementation is robust with minor opportunities for enhancement in performance and security headers.
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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