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Security report for immergas.cz

IMMERGAS · Energy · Czech Republic

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

Security score

49/100

Risk levelHigh

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

IMMERGAS is a well-established Czech company specializing in manufacturing and selling high-quality gas boilers and heating solutions, including heat pumps and air conditioning. The company has a strong market presence in the Czech Republic with over 50 years of tradition and a large service network. Their website reflects a professional business with clear product offerings and customer support channels. Technically, the site uses modern web technologies such as Bootstrap, jQuery, and Google services, with a CMS likely based on the Nette framework. Security posture is good with HTTPS and cookie consent mechanisms, though improvements in security headers and incident response documentation are recommended. Overall, the website is trustworthy, compliant with GDPR, and provides a positive user experience.

Scanned

NIS2 and GDPR posture

GDPR outside view
40/ 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

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

  2. Email security

    SPF, DKIM and DMARC stop others sending email that looks like it comes from your domain, a common route to phishing and invoice fraud.

    • Critical

      No email authentication configured

      Domain is vulnerable to email spoofing

      What to do: Implement SPF, DKIM, and DMARC immediately

  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 immergas.cz

This scan found 25 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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Recommended

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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
62
Security headers
30
Email security
65
DNS health
75
Network security
20
GDPR outside view
40
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

IMMERGAS operates in the energy sector focusing on heating solutions. Their competitive advantages include long-standing market presence, extensive service and sales networks, and strong warranty and certification credentials. The business model combines manufacturing with direct sales and partner services. Target customers include residential and commercial clients in the Czech Republic. The company leverages partnerships such as VIPSGAS and uses digital marketing tools like Google Analytics and remarketing. Growth indicators include a large installed base and comprehensive product range. Strategic observations suggest maintaining strong service quality and expanding digital presence.

Security posture

The website demonstrates a moderate to good security maturity level with HTTPS enforced and cookie consent implemented. Use of Google reCAPTCHA adds protection against bots. However, the absence of explicit security headers and lack of published incident response or vulnerability disclosure policies indicate areas for improvement. No vulnerabilities or exposed sensitive data were detected in the HTML content. GDPR compliance is evident through privacy and cookie policies. Incident response readiness and security culture indicators are not publicly documented, which could be enhanced to improve trust and resilience.

Recommendations

  1. Implement comprehensive security headers such as Content-Security-Policy, X-Frame-Options, and X-XSS-Protection.
  2. Publish a security.txt file to facilitate vulnerability reporting and improve transparency.
  3. Enhance accessibility features to meet WCAG standards for broader user inclusivity.
  4. Regularly audit third-party scripts and dependencies to mitigate supply chain risks.
  5. Expand incident response documentation and provide dedicated security contact channels.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
IMMERGAS
Description
IMMERGAS is a manufacturer of classic and condensing gas boilers of the highest quality, with over 50 years of customer use. The company provides comprehensive heating system solutions with a focus on comfort, convenience, and customer satisfaction. It has the largest service network in the Czech Republic and a tradition of over 55 years in quality services.
Key services
Manufacture and sale of condensing boilers, Heat pumps, Air conditioning, Stainless steel tanks, Accessories and regulation, Heating care, Underfloor heating, Service and installation networks
Content quality
good
Branding
consistent

Technology

Stack
Bootstrap CSS, FontAwesome, jQuery, jQuery UI, TinyMCE, Lightcase, Google reCAPTCHA, Google Tag Manager
Performance
moderate
Mobile
good
Accessibility
basic
SEO
basic

Security

Observed score
75/100
Good practices seen
  • HTTPS enabled
  • Use of Google reCAPTCHA
  • Cookie consent mechanism implemented

Analytics and tracking

Services
Google Analytics
Tracking level
moderate
Privacy practices
good

Advertising

Ad networks
Google Ads, DoubleClick
Tracking pixels
Google Remarketing
Transparency
good

Site quality

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

Key observations

  1. Website is fully accessible with no blocking or WAF challenges.
  2. Cookie consent and privacy policy are implemented in compliance with GDPR.
  3. No terms of service page detected.
  4. Contact information is available but no explicit emails found in the HTML content.
  5. Use of modern web technologies and frameworks with moderate performance.
  6. Security best practices partially implemented; room for improvement in headers and incident response.
  7. Strong business credibility with certifications and warranties highlighted.
  8. Advertising and analytics use Google services with transparent consent mechanisms.
Technical notes

Notes

The website is built on a modern tech stack including Bootstrap, FontAwesome, jQuery, and Nette framework components. It uses Google Tag Manager and Analytics for marketing and tracking. Performance is moderate with responsive design and mobile optimization. The site uses asynchronous loading for scripts and includes cookie consent scripts for privacy compliance. Technical debt appears low but could benefit from improved SEO metadata and accessibility enhancements. Hosting provider details are not explicit. Overall, the technical infrastructure supports business operations effectively with room for modernization in security and SEO.
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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