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Security report for revizeplynuzlin.cz

Revize plynu Zlín · Energy · Czech Republic

Medium risk. 9 critical or high findings in GDPR outside view, Security headers and 1 other check.

Security score

57/100

Risk levelMedium

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

The website www.revizeplynuzlin.cz represents a small, specialized service provider operating in the energy sector, specifically focusing on inspection, revision, and control of gas equipment in the Zlín region of the Czech Republic. The company offers a range of services including gas device inspections, controls, expert reviews of low-pressure boiler rooms, preparation of local operational regulations, and operator training. The business is positioned as a trusted local expert with official certifications and authorizations, targeting owners and operators of gas equipment in residential, commercial, and industrial settings. Technically, the website is built using the AMP framework, ensuring fast loading times and excellent mobile optimization. It employs Google Analytics for minimal user tracking and includes structured data (JSON-LD) to enhance search engine understanding. The site lacks a cookie consent mechanism and some security headers, which are areas for improvement. The absence of WHOIS data for the domain is a notable concern, impacting trust and legitimacy verification. From a security perspective, the site uses HTTPS and does not expose sensitive information. However, it lacks explicit security policies, incident response contacts, and vulnerability disclosure mechanisms. The site demonstrates good compliance with GDPR through a dedicated PDF document but could enhance privacy compliance by adding cookie consent and clearer policies. Overall, the website is professional, content-rich, and well-structured, serving its niche effectively. Strategic improvements in domain registration transparency, security headers, and privacy mechanisms would enhance trust and security posture.

Scanned

NIS2 and GDPR posture

GDPR outside view
10/ 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. 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';…

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

Keep watching revizeplynuzlin.cz

This scan found 24 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
65
Security headers
20
Email security
70
DNS health
75
Network security
100
GDPR outside view
10
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 revizeplynuzlin.cz, from OffSeq Breach.

No leaked records found

Breach holds no records for revizeplynuzlin.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

The company operates as a local essential service provider in the energy sector, focusing on gas equipment inspection and compliance services. Its competitive advantage lies in specialized certifications and a comprehensive service offering that includes not only inspections but also training and documentation services. The business model is service-based, targeting legal entities and property owners in the Zlín region. Revenue streams likely come from inspection fees, training sessions, and consulting. The company maintains partnerships with related service providers for pressure equipment and heating system inspections, indicating a collaborative ecosystem. Growth indicators are not explicit but the detailed service catalog and certifications suggest a stable operation. The company’s market presence is localized with a strong focus on regulatory compliance and safety.

Security posture

The website demonstrates a moderate security maturity level. It enforces HTTPS and avoids exposing sensitive data in its content. However, the lack of security headers such as Content-Security-Policy, X-Frame-Options, and X-Content-Type-Options reduces its defense-in-depth posture. There is no visible incident response or security policy information, which limits transparency and preparedness. GDPR compliance is addressed via a privacy information PDF, but cookie consent mechanisms are absent, which is a compliance gap. No vulnerability disclosure or security.txt files are present, limiting external reporting channels. Overall, the security posture is adequate for a small business website but could be significantly improved with standard security best practices and transparency measures.

Recommendations

  1. Implement standard security headers (Content-Security-Policy, X-Frame-Options, X-Content-Type-Options) to enhance protection against common web attacks.
  2. Add a cookie consent banner and detailed cookie policy to comply fully with EU cookie regulations and improve user privacy transparency.
  3. Publish a clear security policy and incident response contact information to improve trust and preparedness.
  4. Verify and update WHOIS domain registration data to ensure transparency and legitimacy, reducing trust concerns.
  5. Consider adding a vulnerability disclosure policy or security.txt file to facilitate responsible security reporting.

Contact details published on the site

Addresses
Legal name
Ing. Vladimír Gerlich, Ph.D.
VAT number
CZ8311144589
Registration number
03369315
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
Revize plynu Zlín
Description
Provádění revizí a kontrol plynových zařízení nebo odborných prohlídek NTL kotelen, evidenci termínů spojené s provozem technického zařízení.
Key services
Revize plynových zařízení, Kontroly plynových zařízení, Odborné prohlídky nízkotlakých (NTL) kotelen, Vypracování místního provozního řádu, Školení obsluhy plynových zařízení
Content quality
good
Branding
consistent

Technology

Stack
AMP (Accelerated Mobile Pages), Google Analytics
Frameworks
AMP Framework
Performance
fast
Mobile
excellent
Accessibility
good
SEO
good

Security

Observed score
75/100
Good practices seen
  • HTTPS enforced (canonical link uses https)
  • No exposed sensitive data in HTML
  • No visible vulnerable libraries

Analytics and tracking

Services
Google Analytics
Tracking level
minimal
Privacy practices
basic

Advertising

Transparency
basic

Site quality

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

Key observations

  1. Website is fully accessible with no blocking or WAF challenges.
  2. Content is professionally presented and focused on gas equipment inspection services in the Zlín region.
  3. No privacy or cookie policy page explicitly found, but GDPR information is provided via PDF.
  4. No contact forms present; contact info is provided via email and phone links.
  5. Uses AMP framework for fast mobile-optimized performance.
  6. Google Analytics is used for tracking with minimal user tracking level.
  7. WHOIS data is missing, which is a concern for domain legitimacy verification.
  8. No security.txt or vulnerability disclosure found.
  9. No security headers detected in provided data; recommend adding for improved security posture.
Technical notes

Notes

The website leverages the AMP framework, which provides a modern, fast-loading, and mobile-optimized platform. The use of structured data (JSON-LD) enhances SEO and local business visibility. Google Analytics is integrated for basic user behavior tracking. The site’s design is consistent and professional, with responsive layouts and clear navigation. No CMS or hosting provider information is explicitly detected. Performance is fast due to AMP optimizations. However, the absence of security headers and cookie consent mechanisms indicates some technical debt in security and privacy compliance. The site does not use complex scripts or third-party integrations beyond analytics, reducing attack surface but also limiting advanced functionality.
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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