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Security report for herz24.cz

Herz 24 · Manufacturing · Czech Republic

Medium risk. 9 critical or high findings in GDPR outside view, Email security and 2 other checks.

Security score

57/100

Risk levelMedium

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

Herz 24 is a Czech Republic-based company specializing in the supply of professional materials for plumbers and heating technicians. The website positions itself as a direct supplier of plumbing and heating products, promising delivery within 24 hours. The business model is primarily B2B e-commerce, targeting professional installers and technicians in the plumbing and heating sectors. The website is built on the Shoptet e-commerce platform and uses common web technologies such as jQuery, Google Tag Manager, and Facebook SDK for marketing and analytics purposes. The site is mobile-optimized and presents a professional design with clear navigation and relevant content for its target audience. However, the absence of WHOIS data and registrant information raises concerns about domain legitimacy and trustworthiness. Security posture is moderate with HTTPS enabled and cookie consent implemented, but lacks security headers and visible privacy or terms of service pages. Overall, the website is functional and professional but would benefit from enhanced transparency and security practices.

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

  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 herz24.cz

This scan found 26 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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  • 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
42
Security headers
40
Email security
60
DNS health
75
Network security
100
GDPR outside view
25
Average
57

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

Breach exposure

Leaked credentials and lookalike domains from OffSeq Breach. The counts are free; the detailed lists are paid add-ons.

Dark web exposure

Add-on

Leaked records that mention herz24.cz, from OffSeq Breach.

No leaked records found

Breach holds no records for herz24.cz right now. New leaks arrive continuously, so monitoring on Breach alerts you if that changes.

Monitor on Breach (opens in a new tab)

Technical appendix

Business context, site observations and technical notes gathered during the scan, and the standards behind each reference.

Business context

Business profile

Herz 24 operates in the manufacturing and supply sector for plumbing and heating materials, serving a niche professional market in the Czech Republic. Its competitive advantage lies in direct supply from the manufacturer and rapid delivery times. The company leverages an e-commerce platform to facilitate orders, indicating a digital-first approach to sales. The lack of detailed company information such as founding year, parent company, or subsidiaries limits deeper business intelligence insights. No partner or subsidiary domains were identified. Marketing efforts include use of Google and Facebook tracking technologies, suggesting active digital marketing campaigns. The absence of visible certifications or trust badges may impact buyer confidence. Strategic growth could be supported by improving transparency and adding more comprehensive business and compliance information.

Security posture

The website demonstrates a basic to moderate security posture. HTTPS is properly implemented, ensuring encrypted communications. A cookie consent mechanism is present, aligning with privacy regulations. However, the absence of key security headers such as Content-Security-Policy, X-Content-Type-Options, and Strict-Transport-Security reduces protection against common web attacks. No evidence of vulnerability disclosure or incident response policies was found, which could hinder timely handling of security incidents. The use of an outdated jQuery version (1.11.3) may expose the site to known vulnerabilities if not properly patched. No exposed sensitive data or credentials were detected in the provided content. Overall, the site would benefit from implementing additional security headers, updating libraries, and publishing security policies to enhance trust and resilience.

Recommendations

  1. Implement comprehensive security headers including Content-Security-Policy, X-Content-Type-Options, X-Frame-Options, and Strict-Transport-Security.
  2. Publish a clear and accessible privacy policy and terms of service pages to improve compliance and user trust.
  3. Update JavaScript libraries such as jQuery to the latest secure versions to mitigate vulnerabilities.
  4. Provide explicit contact information including security incident response contacts to facilitate communication.
  5. Consider adding vulnerability disclosure and data protection officer information to demonstrate security maturity.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
Herz 24
Description
Materiál pro instalatéry a topenáře přímo od výrobce Herz. Potřeby pro vodu a topení dodáváme do 24 hodin.
Key services
supply of plumbing and heating materials, fast delivery within 24 hours
Content quality
good
Branding
consistent

Technology

Stack
jQuery 1.11.3, Google Tag Manager, Facebook SDK, FontAwesome 5, Shoptet CMS
Platforms
Shoptet e-commerce platform
Performance
moderate
Mobile
good
Accessibility
basic
SEO
good

Security

Observed score
75/100
Good practices seen
  • HTTPS enabled
  • cookie consent mechanism

Analytics and tracking

Services
Google Analytics (via GTM)
Tracking level
moderate
Privacy practices
basic

Advertising

Tracking pixels
Facebook SDK
Marketing tools
Facebook Pixel
Transparency
basic

Site quality

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

Key observations

  1. Website is accessible and not blocked by WAF or security mechanisms.
  2. WHOIS data is unavailable, which is unusual and reduces domain trust.
  3. Website uses Shoptet e-commerce platform with standard tracking and marketing scripts.
  4. No explicit privacy policy or terms of service pages found.
  5. Cookie consent mechanism is implemented with marketing and analytics consent denied by default.
  6. No contact emails or phone numbers explicitly found in the provided HTML snippet.
  7. Website content is professional and targeted at plumbing and heating professionals.
  8. No security headers detected in the provided data; SSL is enabled.
  9. No evidence of security incident response or vulnerability disclosure information.
Technical notes

Notes

The website is built on the Shoptet e-commerce platform, utilizing jQuery 1.11.3, Google Tag Manager, Facebook SDK, and FontAwesome 5 for UI icons. The site loads resources from cdn.myshoptet.com and other reputable CDNs. The HTML includes proper meta tags for SEO and Open Graph for social sharing. Performance appears moderate with standard optimization practices. Mobile responsiveness is good, and accessibility is basic but present. The lack of security headers and outdated JavaScript libraries represent technical debt and potential risk. Hosting provider details are not explicitly available. Overall, the technical infrastructure supports the business needs but requires modernization and security enhancements.
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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