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Security report for internetpb.cz

Nej.cz · Telecommunications · Czech Republic

Low risk. 3 critical or high findings in Security headers and SSL/TLS.

Security score

85/100

Risk levelLow

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

Nej.cz is a Czech telecommunications provider offering internet, digital television, and telephone services primarily targeting personal and business customers. The company operates as part of the O2 group, indicating a strong market position within the Czech Republic. The website presents a professional and consistent brand image with clear service offerings and contact information. Technically, the site employs modern web technologies including Google Tag Manager, Google Analytics, Cookiebot for cookie consent, Hotjar for user behavior analytics, and reCAPTCHA for form security. The site is mobile-optimized and provides a good user experience with clear navigation and relevant content. Security posture is solid with HTTPS enforced and cookie consent mechanisms in place, although some security headers could be improved. No critical vulnerabilities or exposed sensitive data were detected. Privacy compliance is well addressed with a comprehensive cookie policy and GDPR-aligned consent management. However, WHOIS data is unavailable, likely due to privacy protection, which is common for this business type. Overall, Nej.cz demonstrates a trustworthy and professional online presence with room for minor security enhancements.

Scanned

NIS2 and GDPR posture

GDPR outside view
100/ 100 · Low
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

3 findings rated critical or high. Fix these first.

  1. 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 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';…

  2. SSL/TLS

    TLS encrypts the connection and proves the site is really yours. Weak or expiring certificates trigger browser warnings and put traffic at risk.

    • High

      Weak Protocols Supported

      Server supports weak protocols: TLSv1.1

      What to do: Disable TLS 1.0, TLS 1.1, and all SSL versions

      • CWE-327
      • OWASP A04:2025
      • ASVS V12.1.1
    • High

      SSL Certificate Expires Soon

      SSL certificate expires in 10 days

      What to do: Renew SSL certificate before expiration

      • NIS2 21(2)(h)
      • IR 2024/2690 9.2(c): Implementing Regulation (EU) 2024/2690, Annex point 9.2(c): Cryptography
      • NIST SC-17: NIST SP 800-53 Rev. 5 SC-17: Public Key Infrastructure Certificates

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

Keep watching internetpb.cz

This scan found 14 issues across 5 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

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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
80
Email security
80
DNS health
85
Network security
100
GDPR outside view
100
Average
85

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

Nej.cz operates in the telecommunications sector, providing essential digital services such as internet access, television, and telephony. Its affiliation with O2 enhances its market credibility and reach. The business model focuses on both personal and corporate customers, with a dedicated business domain. Revenue streams likely include subscription fees for internet, TV packages, and mobile services. The company leverages partnerships with major advertising and analytics platforms to optimize marketing efforts. Growth indicators include a well-maintained website with active content updates and customer support channels. Strategic observations suggest a focus on customer proximity and service quality, supported by transparent contact information and compliance with data protection regulations.

Security posture

The website exhibits a mature security posture with HTTPS enforced and integration of reCAPTCHA to mitigate automated abuse. Cookie consent is managed via Cookiebot, providing granular user control and transparency. However, explicit security headers such as Content-Security-Policy, X-Frame-Options, and X-Content-Type-Options are not clearly present, representing an area for improvement. No public security policy or incident response contacts were found, which could enhance trust and preparedness. No vulnerabilities or exposed sensitive data were detected in the analysis. Compliance with GDPR is evident through cookie management and privacy policy disclosures. Overall, the security maturity is good but could benefit from formalized policies and enhanced header configurations.

Recommendations

  1. Implement and verify comprehensive security headers including CSP, X-Frame-Options, and X-Content-Type-Options to strengthen browser security.
  2. Publish a dedicated security policy and incident response contact information to improve transparency and readiness.
  3. Regularly audit and update third-party libraries and scripts to mitigate potential vulnerabilities.
  4. Enhance accessibility features to improve usability for all users, including those with disabilities.
  5. Maintain and update privacy and cookie policies to reflect evolving regulations and best practices.

Contact details published on the site

Addresses
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
Nej.cz
Description
TELEVIZE - Digitální televize, Internet a Telefon
Key services
Internet, Television, Mobile telephony
Content quality
good
Branding
consistent

Technology

Stack
Google Tag Manager, Google Analytics, Cookiebot, Leaflet.js, Hotjar, reCAPTCHA
Performance
moderate
Mobile
good
Accessibility
basic
SEO
good

Security

Observed score
80/100
Good practices seen
  • HTTPS enforced
  • Use of reCAPTCHA for forms
  • Cookie consent banner with granular controls

Analytics and tracking

Services
Google Analytics, Hotjar
Tracking level
extensive
Privacy practices
good

Advertising

Ad networks
Etarget, Meta Platforms, Inc.
Tracking pixels
Cookiebot, Hotjar, Facebook Pixel, Seznam.cz retargeting
Marketing tools
Cookiebot
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 no blocking or WAF challenge.
  2. WHOIS data is unavailable, likely due to privacy protection or registry restrictions.
  3. Comprehensive cookie consent mechanism implemented with detailed cookie classification.
  4. Multiple trusted third-party services integrated for analytics and marketing.
  5. Clear contact information and structured data present.
  6. No security policy or incident response information publicly found.
  7. No vulnerability disclosure or security.txt file detected.
  8. Website content is professional and relevant to telecommunications services.
  9. No adult or questionable content detected.
Technical notes

Notes

The website utilizes a modern technology stack with third-party integrations for analytics (Google Analytics, Hotjar), marketing (Google Tag Manager, Etarget, Facebook Pixel), and cookie consent management (Cookiebot). The presence of Leaflet.js indicates use of interactive maps. The site is served over HTTPS with a favicon and multiple apple-touch icons for device compatibility. Performance is moderate with asynchronous loading of scripts to optimize page load times. The site is mobile responsive and SEO optimized with proper meta tags and Open Graph data. No CMS was explicitly detected. Hosting provider details are not disclosed. Overall, the technical infrastructure supports a professional and user-friendly experience with opportunities for further optimization in security headers and accessibility.
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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