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Security report for mesit.cz

MESIT holding, a.s. · Manufacturing · Czech Republic

Medium risk. 7 critical or high findings in GDPR outside view, Security headers and 2 other checks.

Security score

63/100

Risk levelMedium

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

MESIT holding, a.s. is a well-established Czech manufacturing company with over 70 years of tradition, specializing in the development and production of highly specialized products and systems primarily for aviation, defense, transport, electrical engineering, mechanical engineering, and education sectors. The company holds significant certifications such as the EASA Level B certification, positioning it as a reputable supplier in the aviation electronics market. MESIT is part of the OMNIPOL Group, enhancing its market presence and operational capabilities. The website infrastructure leverages modern technologies including jQuery, Bootstrap, and integrates multiple analytics and user experience tools such as Google Analytics, Hotjar, and Smartlook. The site is mobile-optimized with good SEO and accessibility features, although some improvements in security headers and incident response disclosures could be made. The cookie consent mechanism is robust and GDPR compliant, reflecting a mature privacy posture. Security-wise, the site enforces HTTPS and employs cookie consent but lacks visible advanced security headers and published security policies. No vulnerabilities or exposed sensitive data were detected in the HTML content. The WHOIS data is unavailable, likely due to privacy protection, but the website content and business information strongly indicate legitimacy and consistent branding. Overall, MESIT holding, a.s. presents a professional and trustworthy digital presence aligned with its business stature. Strategic recommendations include enhancing security transparency, publishing incident response contacts, and improving security headers to further strengthen the security posture.

Scanned

NIS2 and GDPR posture

GDPR outside view
48/ 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

7 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 Cookie Policy found

      GDPR requires clear information about cookie usage

      What to do: Add a dedicated cookie policy explaining cookie usage and purposes

  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 mesit.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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Full report

€39.90one-time

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Prices incl. 21% VAT. Secure checkout by Mollie; sold by SEQ SIA, Latvia.

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
15
Email security
75
DNS health
75
Network security
100
GDPR outside view
48
Average
63

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

MESIT holding operates in specialized manufacturing sectors with a focus on avionics, military technology, and precision mechanical parts. Its competitive advantage lies in its long-standing tradition, certified products, and integration within the OMNIPOL Group. The business model centers on B2B manufacturing and development services targeting aerospace, defense, and industrial clients. The company also invests in education through its MESIT high school, supporting workforce development. Growth indicators include recent certifications and participation in major industry events. The partnership ecosystem includes its parent company OMNIPOL and subsidiaries MESIT machinery and MESIT ASD. The company maintains a strong market position in the Czech Republic and internationally through certifications and quality standards.

Security posture

The website demonstrates a mature security posture with enforced HTTPS and GDPR-compliant cookie consent mechanisms. However, it lacks explicit security policies, incident response information, and advanced security headers such as Content-Security-Policy or X-Content-Type-Options. The use of multiple third-party analytics and tracking tools is managed with user consent, mitigating privacy risks. No visible vulnerabilities or sensitive data exposures were found. The absence of WHOIS data limits domain registration transparency but is justified by privacy protection norms. Overall, the security maturity is good but could benefit from enhanced transparency and technical controls.

Recommendations

  1. Publish a dedicated security policy and incident response page to improve transparency and user trust.
  2. Implement and configure security headers like Content-Security-Policy, X-Frame-Options, and X-Content-Type-Options to harden the website against common attacks.
  3. Regularly audit and update third-party scripts and libraries to mitigate potential vulnerabilities.
  4. Provide clear contact channels for security incidents, such as security@ or abuse@ email addresses.
  5. Enhance accessibility features to meet higher standards and improve user experience for all visitors.

Contact details published on the site

Addresses
Legal name
MESIT holding, a.s.
VAT number
CZ47912529
Registration number
47912529
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
MESIT holding, a.s.
Description
We develop and manufacture highly specialized products and systems. Their quality is verified in demanding sectors such as aviation and military industry.
Key services
Development and production of avionics and communication technology, Precision mechanical parts manufacturing, Education via MESIT high school, Environmental and safety compliance, Health service and charity support
Content quality
excellent
Branding
consistent

Technology

Stack
jQuery, Bootstrap, Google Analytics, Hotjar, Smartlook, Quriobot chatbot
Frameworks
Bootstrap
Performance
moderate
Mobile
good
Accessibility
basic
SEO
good

Security

Observed score
85/100
Good practices seen
  • HTTPS enforced
  • Cookie consent with opt-in/out
  • No exposed sensitive data in HTML

Analytics and tracking

Services
Google Analytics, Hotjar, Smartlook
Tracking level
moderate
Privacy practices
good

Advertising

Tracking pixels
Hotjar, Smartlook
Marketing tools
Quriobot chatbot
Transparency
good

Site quality

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

Key observations

  1. Website is fully accessible with rich content and professional design
  2. No WHOIS data available from CZ.NIC registry, possibly due to privacy or registry policy
  3. Strong compliance with GDPR and cookie consent regulations
  4. Use of multiple analytics and tracking tools with user consent
  5. Clear contact information and company details provided
  6. No visible security headers detected in HTML source
  7. No terms of service page found
  8. No explicit security or incident response policies published
Technical notes

Notes

The website uses a modern tech stack with jQuery and Bootstrap frameworks, ensuring responsive design and interactive UI elements. Analytics and user behavior tracking are implemented via Google Analytics, Hotjar, and Smartlook, with explicit cookie consent management. The site loads moderately fast and is mobile-optimized. No CMS was detected, suggesting a custom or proprietary platform. Hosting provider details are not disclosed. The site could improve by adding more comprehensive accessibility features and optimizing security headers. Overall, the technical implementation supports the business needs effectively with room for security and performance 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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