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Security report for cstfire.com

CSTfire s.r.o. · Energy · Czech Republic

Medium risk. 8 critical or high findings in Security headers, GDPR outside view and 3 other checks.

Security score

51/100

Risk levelMedium

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

CSTfire s.r.o. is a Czech-based company specializing in biomass combustion technology, providing environmentally friendly heating solutions primarily for industrial and agricultural clients. Their product portfolio includes small and large series biomass boilers, conveyor systems, and fuel conditioning services. The company positions itself as a CO2-neutral energy provider aiming to reduce fossil fuel dependency. Technically, the website is built on WordPress with a moderate performance profile and uses common plugins for anti-spam, gallery, and cookie consent management. Security posture is solid with HTTPS and anti-spam measures, though lacking published security policies and incident response contacts. The absence of WHOIS registration data raises some concerns about domain legitimacy, but the website content and business information appear professional and trustworthy. Overall, the site demonstrates good privacy compliance and user experience, with clear contact information and GDPR adherence.

Scanned

NIS2 and GDPR posture

GDPR outside view
65/ 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

8 findings rated critical or high. Fix these first.

  1. 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 X-Frame-Options header

      Prevents clickjacking attacks

      What to do: Add "X-Frame-Options: DENY" or "X-Frame-Options: SAMEORIGIN"

    • 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';…

  2. GDPR outside view

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

    • 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

      Third-party services without privacy policy

      Detected services: Google Analytics, Facebook, Twitter, Google APIs, Google Ads

      What to do: Document all third-party data sharing in your privacy policy

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

Keep watching cstfire.com

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

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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
15
Email security
65
DNS health
80
Network security
20
GDPR outside view
65
Average
51

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

The company operates in the renewable energy sector focusing on biomass heating solutions, targeting B2B customers such as wood processing companies, farms, and municipalities. Their business model revolves around manufacturing and selling biomass boilers and related equipment, supported by technical documentation and certifications. The market position is that of a niche player with over a decade of experience, emphasizing environmental benefits and energy independence. The website content and structure support a professional image with consistent branding and trust signals like certificates and GDPR compliance. The company appears small-sized and localized in the Czech Republic, with no visible parent or subsidiary companies. Advertising and analytics usage indicate a moderate digital marketing approach with transparency and consent mechanisms in place.

Security posture

The website enforces HTTPS and employs CleanTalk anti-spam protection, along with a comprehensive cookie consent mechanism that categorizes cookies by purpose. However, it lacks advanced security headers such as Content-Security-Policy and X-Frame-Options, and does not publish a security policy or incident response contact details. No vulnerabilities or exposed sensitive data were detected in the HTML content. The use of common WordPress plugins is noted, but no outdated or vulnerable libraries were identified. The security score is good but could be improved by adding formal security documentation and enhancing HTTP headers. The missing WHOIS data is a concern for domain trust but does not directly impact website security posture.

Recommendations

  1. Implement and publish a formal security policy and incident response contact information on the website.
  2. Add security HTTP headers such as Content-Security-Policy, X-Frame-Options, and Strict-Transport-Security.
  3. Investigate and resolve the missing WHOIS registration data to improve domain legitimacy and trust.
  4. Consider adding a security.txt file or vulnerability disclosure policy to facilitate responsible reporting.
  5. Continue maintaining GDPR compliance and enhance accessibility features for broader user inclusivity.

Contact details published on the site

Addresses
Legal name
CSTfire s.r.o.
VAT number
CZ28607520
Registration number
28607520
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
CSTfire s.r.o.
Description
CSTfire s.r.o. specializes in biomass combustion technology, offering boilers and heating solutions that promote CO2-neutral energy and reduce dependence on fossil fuels. They serve wood processing companies, agricultural farms, and municipalities with heating and fuel conditioning solutions.
Key services
Biomass boilers (small and large series), Conveyor systems, Fuel conditioning, Catalogues and technical documentation
Content quality
good
Branding
consistent

Technology

Stack
WordPress, jQuery, Google Tag Manager, CleanTalk Anti-Spam, Photo Gallery plugin, Easy Fancybox, CookieYes Consent
Platforms
WordPress CMS
Performance
moderate
Mobile
good
Accessibility
basic
SEO
good

Security

Observed score
80/100
Good practices seen
  • HTTPS enforced
  • Anti-spam protection via CleanTalk
  • Cookie consent banner with detailed categories

Analytics and tracking

Services
Google Analytics, Microsoft Clarity
Tracking level
moderate
Privacy practices
good

Advertising

Ad networks
Microsoft Advertising, Google DoubleClick
Tracking pixels
Microsoft Clarity
Marketing tools
CookieYes, CleanTalk Anti-Spam
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 detected.
  2. Content is professionally presented and relevant to biomass energy sector.
  3. Cookie consent and GDPR compliance are well implemented.
  4. WHOIS data is missing, which is a concern for domain legitimacy.
  5. No explicit security policy or incident response information published.
  6. Multiple analytics and advertising services are used with consent.
  7. Contact information is clearly provided including phone numbers and address.
  8. Website uses WordPress CMS with common plugins and scripts.
Technical notes

Notes

The website is built on WordPress CMS using a child theme of Twenty Eleven, with jQuery and various plugins for galleries, anti-spam, cookie consent, and lightbox functionality. Google Tag Manager and Microsoft Clarity are used for analytics and user behavior tracking. The site loads multiple CSS and JS resources from its own domain and trusted third parties. Performance is moderate with no critical errors detected. Mobile optimization is good, and SEO is supported by Yoast SEO plugin with proper meta tags and structured data in JSON-LD format. Accessibility is basic but present with ARIA labels and assistive text. The technical stack is modern but could benefit from updated security headers and enhanced accessibility compliance.
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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