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Security report for jenfirmy.cz

Coweo Technologies s.r.o. · Technology · Czech Republic

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

Security score

69/100

Risk levelMedium

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

Coweo Technologies s.r.o. operates JenFirmy.cz, a prominent Czech online platform specializing in employee reviews of companies and job listings. The site positions itself as the second largest job and part-time work portal in the Czech Republic, offering services that include company reviews, job offers, and salary overviews. The business model focuses on providing transparent workplace insights and recruitment advertising services, targeting job seekers and employers within the Czech market. The company has been active since 2007, demonstrating a mature presence in the HR technology sector. Technically, the website employs modern web technologies including React and the Nette framework, supported by cloud-based CDN services such as AWS Cloudfront. It integrates Google Tag Manager and Sentry for analytics and error monitoring, indicating a commitment to performance and operational stability. The site is mobile-optimized with good SEO practices and basic accessibility features, delivering a fast and user-friendly experience. From a security perspective, the site enforces HTTPS and uses monitoring tools but lacks explicit security headers like Content-Security-Policy and X-Frame-Options, which are recommended for enhanced protection. No vulnerabilities or exposed sensitive data were detected in the content. Privacy and cookie policies are comprehensive and GDPR compliant, with an active cookie consent mechanism. Overall, the website presents a professional and trustworthy front with strong content relevance and user engagement. However, the absence of WHOIS registration data introduces some uncertainty regarding domain legitimacy, which slightly impacts the business credibility score. Strategic recommendations include improving security headers, verifying domain registration details, and enhancing accessibility compliance to further strengthen the platform's security posture and trustworthiness.

Scanned

This is an earlier scan of jenfirmy.cz. View the latest report

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, YouTube

      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 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';…

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Keep watching jenfirmy.cz

This scan found 18 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
75
Security headers
45
Email security
70
DNS health
85
Network security
100
GDPR outside view
40
Average
69

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

JenFirmy.cz holds a significant market position as a leading Czech employment review and job listing portal. Its competitive advantage lies in verified employee reviews and a broad job offer database, supported by a sister site and recruitment interface under the same corporate umbrella. The business model leverages advertising and subscription services for HR professionals, targeting job seekers and companies. Growth indicators include a large volume of job offers and active social media engagement. The company operates primarily in the technology sector with a medium-sized organizational footprint. Partnerships with related domains like JenPrace.cz and JenHunter enhance its ecosystem. The platform's transparent policies and trust signals contribute to a positive market reputation.

Security posture

The website demonstrates a moderate to high security maturity level with enforced HTTPS and use of monitoring tools such as Sentry. The lack of some recommended security headers (Content-Security-Policy, X-Frame-Options, X-Content-Type-Options) represents an area for improvement to mitigate risks like clickjacking and MIME sniffing. No direct vulnerabilities or exposed sensitive data were found, and forms are limited to search inputs, reducing attack surface. Privacy compliance is strong with clear cookie consent and GDPR-aligned policies. Incident response and security policy documentation are not publicly available, suggesting potential gaps in transparency. Overall, the security posture is solid but could benefit from enhanced header configurations and published security policies.

Recommendations

  1. Implement comprehensive security headers including Content-Security-Policy, X-Frame-Options, and X-Content-Type-Options to strengthen protection against common web attacks.
  2. Verify and publish domain WHOIS registration details to improve business credibility and trustworthiness.
  3. Enhance accessibility features to meet higher compliance standards and improve user experience for all visitors.
  4. Develop and publish a formal security policy and incident response plan to increase transparency and preparedness.
  5. Regularly audit third-party scripts and dependencies to ensure no vulnerable libraries are in use and maintain secure integrations.

Contact details published on the site

Addresses
Legal name
Coweo Technologies s.r.o.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
Coweo Technologies s.r.o.
Description
Jsme Coweo Technologies a provozujeme druhý největší inzertní portál pro vyhledávání práce a brigád v České republice – JenFirmy.cz. Specializujeme se na prodej inzertních služeb v oblasti personalistiky. Na trhu nejsme žádní nováčci, zkušenosti s inzerováním pracovních nabídek sbíráme již od roku 2007 a neustále pracujeme na rozšiřování a zkvalitňování služeb.
Key services
company reviews by employees, job offers listings, salary overview, advertising services for HR
Content quality
good
Branding
consistent

Technology

Stack
JavaScript, React, Nette Framework, Google Tag Manager, Cloudfront CDN, Sentry
Frameworks
Nette
Performance
fast
Mobile
good
Accessibility
basic
SEO
good

Security

Observed score
85/100
Good practices seen
  • HTTPS enforced
  • No exposed sensitive data in HTML
  • Use of Sentry for error monitoring

Analytics and tracking

Services
Google Tag Manager, Cloudflare Insights
Tracking level
moderate
Privacy practices
good

Advertising

Ad networks
Google Ads
Tracking pixels
Cloudflare Insights
Marketing tools
Sentry
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 rich content and no blocking detected.
  2. WHOIS data is missing, which is unusual and reduces domain trust.
  3. Website uses modern technologies and good security practices.
  4. Privacy and cookie policies are present and GDPR compliant.
  5. No direct company contact emails or phone numbers found in HTML content.
  6. Social media presence is strong and consistent with business branding.
  7. Content is focused on employment reviews and job offers in Czech Republic.
  8. No adult or questionable content detected.
  9. Forms present are search forms with minimal data collection fields.
Technical notes

Notes

The website is built on a modern technology stack featuring React and the Nette PHP framework, supported by AWS Cloudfront CDN for content delivery. It integrates Google Tag Manager for analytics and Sentry for error monitoring, indicating a mature approach to performance and operational monitoring. The site is mobile responsive with good SEO metadata and structured data (JSON-LD) for local business information. Performance is fast with minimal blocking scripts and asynchronous loading of analytics. However, some security headers are missing, and accessibility features are basic, suggesting opportunities for technical enhancements. The absence of CMS identification suggests a custom or proprietary platform.
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

Earlier scans of this domain

  1. 69/100Medium27 findingsView report
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