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Security report for stemmark.cz

Marketingový výzkum a analýza dat - STEM/MARK · Other · Czech Republic

Medium risk. 6 critical or high findings in GDPR outside view, Security headers and 1 other check.

Security score

68/100

Risk levelMedium

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

STEM/MARK is a well-established Czech market research agency founded in 1997, specializing in marketing and public opinion research across diverse sectors including media, finance, transportation, energy, retail, and government. The company leverages recognized industry certifications such as ESOMAR and SIMAR, and maintains partnerships with national and international research organizations. Their website reflects a professional and comprehensive digital presence, offering detailed service descriptions, case studies, and multi-language support. The company targets businesses and organizations seeking data-driven insights to support growth and decision-making.

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

6 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

    • High

      Third-party services without privacy policy

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

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

  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 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 stemmark.cz

This scan found 22 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
50
Email security
75
DNS health
80
Network security
100
GDPR outside view
40
Average
68

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 stemmark.cz, from OffSeq Breach.

Total records
265
Employees
1
Customers
261
Third parties
3
Weak passwords
20%

Latest record dated 2025-04-25 · 10 subdomains affected

See the 10 newest leaked credentials

A one-off add-on to this report that lists the most recent identifier and password pairs OffSeq Breach holds for stemmark.cz.

Select it in the checkout above.

Masked preview

  • –mail.stemmark.cz2025-04-25

Breach keeps ingesting new leaks, so these numbers can grow between scans.

Open in Breach(opens in a new tab)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 holds a strong market position as a trusted research provider in the Czech Republic, supported by a medium-sized operational scale and a broad sector focus. Their business model centers on delivering customized research and data analysis services, supported by a robust partnership ecosystem including ESOMAR and SIMAR memberships. The website's content and structure indicate a mature organization with clear growth orientation and client engagement strategies. Their digital assets include active social media channels and a well-maintained website with SEO and accessibility considerations.

Security posture

The website employs HTTPS with good SSL configuration and integrates security best practices such as Google reCAPTCHA and cookie consent management. However, explicit security headers like Content-Security-Policy and X-Frame-Options are not visibly configured, representing an area for improvement. No vulnerabilities or exposed sensitive data were detected in the HTML content. The absence of a published security policy or incident response contact suggests room to enhance transparency and readiness. Overall, the security posture is solid but could benefit from additional header hardening and formalized incident response disclosures.

Recommendations

  1. Implement and verify security headers including CSP, X-Frame-Options, and X-Content-Type-Options to strengthen browser security.
  2. Publish a clear security policy and incident response contact information to improve transparency and trust.
  3. Maintain regular updates of WordPress core and plugins to mitigate vulnerabilities.
  4. Consider adding a security.txt file to facilitate vulnerability disclosures.
  5. Enhance monitoring of third-party scripts and tracking pixels for privacy and security compliance.

Contact details published on the site

Addresses
Legal name
DFMG, s.r.o.
VAT number
CZ61859591
Registration number
61859591
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
Marketingový výzkum a analýza dat - STEM/MARK
Description
STEM/MARK je agentura pro výzkum trhu, která pomáhá svým klientům růst. Provádíme marketingové výzkumy i výzkumy veřejného mínění pro klienty z nejrůznějších oborů.
Key services
Marketing research, Public opinion research, Data collection, Data analysis
Content quality
excellent
Branding
consistent

Technology

Stack
WordPress, Google Tag Manager, Google Analytics, Facebook Pixel, Contact Form 7, Yoast SEO, CookieConsent.js
Platforms
WordPress CMS
Performance
moderate
Mobile
good
Accessibility
good
SEO
good

Security

Observed score
85/100
Good practices seen
  • HTTPS enforced
  • Use of Google reCAPTCHA
  • Cookie consent management
  • No exposed sensitive data in HTML

Analytics and tracking

Services
Google Analytics
Tracking level
moderate
Privacy practices
good

Advertising

Tracking pixels
Facebook Pixel
Marketing tools
Facebook Pixel
Transparency
good

Site quality

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

Key observations

  1. Website is professionally designed and well-structured.
  2. Strong compliance with GDPR and cookie consent regulations.
  3. Use of recognized industry certifications and partnerships.
  4. Comprehensive cookie consent management with multi-language support.
  5. No visible security or privacy red flags.
  6. Active social media presence on major platforms.
  7. No terms of service page found.
  8. No explicit security policy or incident response contact found.
Technical notes

Notes

The website is built on WordPress CMS with modern integrations such as Google Tag Manager, Google Analytics, Facebook Pixel, and Contact Form 7 for forms. It uses Yoast SEO for search optimization and a cookie consent library for GDPR compliance. The site is mobile optimized with responsive design and good accessibility features. Performance is moderate, with asynchronous loading of scripts and preconnect hints for fonts. Hosting is managed via REG-WEBGLOBE registrar, consistent with the Czech domain. The technical stack is mature and well-maintained, though opportunities exist to enhance security headers and performance tuning.
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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