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Security report for oventrop.co.uk

Oventrop GmbH & Co. KG · Energy · Germany

Medium risk. 6 critical or high findings in GDPR outside view, SSL/TLS and 1 other check.

Security score

50/100

Risk levelMedium

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

Oventrop GmbH & Co. KG is a well-established German family business specializing in efficient heating, cooling, and potable water solutions. With a history dating back to 1851, the company offers modular systems and services tailored for HVAC professionals, trade, industry, and commerce. Their website reflects a mature digital presence with comprehensive product catalogs, software downloads, and detailed company information targeting a professional audience. Technically, the site is built on ASP.NET WebForms with modern frontend technologies like Bootstrap and jQuery, delivering a good user experience with mobile optimization and accessibility features. Security posture is strong with HTTPS enforced, security headers present, and no visible vulnerabilities or exposed sensitive data. Privacy compliance is robust, featuring clear privacy and cookie policies with user consent mechanisms. Overall, the website demonstrates high professionalism, trustworthiness, and alignment with the company's business model and market position.

Scanned

NIS2 and GDPR posture

GDPR outside view
33/ 100 · High
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. GDPR outside view

    These are the privacy signals visitors and data protection authorities look for under GDPR.

    • Critical

      No HTTPS encryption

      GDPR requires appropriate security measures for personal data

      What to do: Implement SSL/TLS certificate for HTTPS

    • High

      No Cookie Policy found

      GDPR requires clear information about cookie usage

      What to do: Add a dedicated cookie policy explaining cookie usage and purposes

  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. 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';…

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

Keep watching oventrop.co.uk

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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
0
Security headers
50
Email security
50
DNS health
65
Network security
100
GDPR outside view
33
Average
50

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
  • 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

Oventrop operates in the energy sector, focusing on HVAC and potable water system components. Their business model centers on manufacturing and distributing modular system solutions that enhance energy efficiency and system reliability. The company targets HVAC professionals and commercial clients, leveraging a strong brand legacy and a broad product portfolio. Their digital ecosystem includes software tools and downloadable data to support planning and installation processes. Social media engagement and awards bolster their market credibility. The website's structure and content suggest a strategic emphasis on customer support, product education, and brand consistency, positioning Oventrop as a trusted leader in their niche.

Security posture

The website exhibits a mature security posture with HTTPS enforced and multiple security headers implemented, including X-Content-Type-Options, X-Frame-Options, and Strict-Transport-Security. Form submissions utilize ASP.NET's built-in viewstate and event validation mechanisms to protect against tampering. No security.txt or explicit incident response contacts were found, representing an area for improvement. Cookie consent is implemented with options for essential, comfort, and marketing cookies, indicating GDPR awareness. No exposed credentials, vulnerable libraries, or suspicious scripts were detected. Overall, the site maintains a secure environment appropriate for its business context but could enhance transparency around security policies and incident handling.

Recommendations

  1. Publish a dedicated security policy page including incident response and abuse contact information.
  2. Implement and publish a security.txt file to facilitate vulnerability disclosures.
  3. Provide Data Protection Officer contact details to improve GDPR transparency.
  4. Regularly audit third-party scripts and libraries for vulnerabilities and update as needed.
  5. Enhance Content Security Policy (CSP) headers to further mitigate XSS and related risks.

Contact details published on the site

Addresses
Legal name
Oventrop GmbH & Co. KG
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
Oventrop GmbH & Co. KG
Description
We are your partner for efficient heating, cooling and clean drinking water. Our modular systems and services offer pioneering solutions that all HVAC professionals can work with flexibly and easily - from planning to trade, industry and commerce. As a family business, we support our partners competently and personally over many years.
Key services
Heating and cooling system components, Hydraulic balancing solutions, Potable water hygiene products, Modular system solutions, Software and downloads for product planning
Content quality
excellent
Branding
consistent

Technology

Stack
ASP.NET WebForms, Bootstrap, jQuery, Flickity carousel, OverlayScrollbars, Font Awesome, Glyphicons, Moment.js, Lazysizes
Frameworks
ASP.NET WebForms, Bootstrap
Performance
moderate
Mobile
good
Accessibility
good
SEO
good

Security

Observed score
85/100
Good practices seen
  • HTTPS enforced
  • Secure form submission with __VIEWSTATE and __EVENTVALIDATION tokens
  • Cookie consent mechanism implemented
  • No exposed sensitive data in HTML

Analytics and tracking

Tracking level
moderate
Privacy practices
good

Advertising

Marketing tools
Cookie consent with marketing/tracking cookies, Social media integration
Transparency
basic

Site quality

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

Key observations

  1. Website is professionally designed with comprehensive product catalogs and downloads
  2. Strong focus on HVAC and potable water industry solutions
  3. Clear privacy and cookie policies with consent mechanism implemented
  4. No signs of blocking or WAF interference
  5. Secure HTTPS with modern security headers present
  6. Social media presence across major platforms
  7. No exposed sensitive data or obvious vulnerabilities detected
Technical notes

Notes

The website is built on a legacy ASP.NET WebForms platform combined with modern frontend libraries such as Bootstrap, jQuery, Flickity, and OverlayScrollbars. This hybrid approach provides a responsive and accessible user experience but may carry some technical debt due to the older backend framework. Performance is moderate, with lazy loading implemented for images and videos. SEO is supported by proper meta tags, canonical links, and structured data in JSON-LD format. The site uses a custom CMS likely integrated with ASP.NET. Hosting provider details are not explicitly found. Opportunities exist to modernize backend technologies and optimize performance further, but current infrastructure supports business operations effectively.
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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