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Security report for thermona.cz

Thermona, spol. s r.o. · Energy · Czech Republic

High risk. 9 critical or high findings in GDPR outside view, Security headers and 3 other checks.

Security score

49/100

Risk levelHigh

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

Thermona, spol. s r.o. is a well-established Czech manufacturer specializing in gas condensing boilers, electric boilers, and heating system accessories. Operating since 1990, the company maintains a strong market position in the energy sector within the Czech Republic and neighboring regions. Their website reflects a professional and comprehensive digital presence, offering detailed product information, multiple contact forms, and a network of certified installation and service partners. The company emphasizes quality, reliability, and customer satisfaction through extended warranty programs and accessible support channels. Technically, the website is built on an ASP.NET WebForms platform with a modern yet somewhat dated technology stack including jQuery 1.11.3 and Bootstrap 3.3.5. The site is mobile-optimized, SEO-friendly, and integrates various third-party libraries for enhanced user experience such as Google Fonts, Font Awesome, and Google Maps API. Performance is moderate, with room for modernization particularly in updating JavaScript libraries. From a security perspective, the site enforces HTTPS and employs CAPTCHA on forms to mitigate spam. Privacy and cookie policies are comprehensive and GDPR compliant, with explicit user consent mechanisms. However, the absence of explicit security headers like Content-Security-Policy and X-Frame-Options suggests opportunities for strengthening security posture. No vulnerabilities or exposed sensitive data were detected in the content. Overall, the website presents a trustworthy and professional image with strong business credibility. The main limitation is the lack of WHOIS data, which slightly reduces domain trustworthiness. Strategic recommendations include updating JavaScript libraries, enhancing HTTP security headers, and verifying domain registration details to improve overall trust and security.

Scanned

NIS2 and GDPR posture

GDPR outside view
25/ 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

9 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

    • High

      No Privacy Policy found

      GDPR requires a clear and accessible privacy policy

      What to do: Add a comprehensive privacy policy page and link to it prominently

    • 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

  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 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 thermona.cz

This scan found 23 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
62
Security headers
45
Email security
60
DNS health
80
Network security
20
GDPR outside view
25
Average
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
  • 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

Thermona operates in the energy manufacturing sector, focusing on heating solutions primarily for residential and commercial customers. Their business model combines product manufacturing with direct sales and a certified partner network for installation and service. The company leverages extended warranty programs and localized country-specific websites to strengthen market penetration. Their partnership ecosystem includes multiple regional domains and social media channels, supporting brand visibility and customer engagement. Growth indicators include active news updates, trade fair participation, and customer contests. The company maintains a consistent brand identity and professional content, positioning itself as a leading Czech heating technology provider.

Security posture

The website demonstrates a mature security posture with enforced HTTPS, CAPTCHA-protected forms, and GDPR-compliant data collection practices. Privacy and cookie policies are clearly presented with user consent mechanisms. However, the absence of some recommended HTTP security headers such as Content-Security-Policy and X-Frame-Options could expose the site to clickjacking or content injection risks. The use of an outdated jQuery version may also pose potential vulnerabilities if not regularly patched. No incident response or security policy information was found, indicating an area for improvement in transparency and preparedness. Overall, the security posture is good but could be enhanced with modern best practices and explicit security documentation.

Recommendations

  1. Implement and enforce Content-Security-Policy, X-Frame-Options, and X-Content-Type-Options HTTP headers to improve protection against common web attacks.
  2. Upgrade jQuery and other JavaScript libraries to the latest stable versions to mitigate known vulnerabilities.
  3. Verify and publish domain WHOIS information to enhance trust and transparency.
  4. Develop and publish a formal security policy and incident response plan accessible on the website.
  5. Conduct regular security audits and penetration testing focusing on form inputs and third-party integrations.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
Thermona, spol. s r.o.
Description
Thermona is a Czech manufacturer specializing in gas wall-hung boilers, gas condensing boilers, and electric boilers. Operating since 1990, it offers modern heating technology products under the THERM brand, emphasizing quality, reliability, and customer satisfaction.
Key services
Manufacture of gas condensing boilers, Electric boilers, Heating system accessories, Installation and service network, Extended warranty programs
Content quality
excellent
Branding
consistent

Technology

Stack
jQuery 1.11.3, Bootstrap 3.3.5, AjaxControlToolkit 4.1.60919.0, Google Fonts (Source Sans Pro, Roboto, Open Sans), Font Awesome 4.4.0, jQuery UI, Moment.js, Google Maps API, Fancybox 2.1.5, Slider Pro, SelectBoxIt, Perfect Scrollbar
Frameworks
ASP.NET WebForms
Platforms
Windows Server (implied by ASP.NET WebForms)
Performance
moderate
Mobile
good
Accessibility
basic
SEO
good

Security

Observed score
85/100
Good practices seen
  • HTTPS enforced
  • CAPTCHA on forms
  • Consent checkboxes for data processing
  • No exposed sensitive data in HTML

Analytics and tracking

Services
Google Analytics, Google Tag Manager
Tracking level
moderate
Privacy practices
good

Advertising

Marketing tools
Facebook Pixel (commented out)
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 and content-rich.
  2. Multiple contact forms with GDPR-compliant consent checkboxes.
  3. Strong presence of social media links and partner sites.
  4. No WHOIS data available, which is unusual for a commercial domain.
  5. No explicit security policy or incident response information found.
  6. Cookie and privacy policies are present and comprehensive.
  7. No signs of adult or questionable content.
  8. Use of older jQuery version may pose minor security risk.
Technical notes

Notes

The website is built on ASP.NET WebForms with a combination of Bootstrap 3.3.5 and jQuery 1.11.3, supplemented by various UI and gallery plugins. It uses Google Fonts and Font Awesome for styling and icons. The site includes Google Analytics and Google Tag Manager for analytics and marketing. Performance is moderate, with some legacy scripts that could be modernized. Mobile responsiveness is good, and SEO practices are well implemented with meta tags and structured navigation. Accessibility is basic, with room for improvement in ARIA roles and keyboard navigation. Hosting details are not explicit but likely Windows-based given the technology stack. Overall, the technical infrastructure supports a professional and functional user experience but would benefit from modernization and enhanced security configurations.
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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