Skip to main content

Security report for jmnet.cz

JM-Networks s.r.o. · Telecommunications · Czech Republic

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

Security score

55/100

Risk levelMedium

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

JM-Networks s.r.o. operates as a regional internet and television service provider based in Prague, Czech Republic. The company targets residential customers including family houses and apartment buildings, as well as business clients and developers. Their service offerings include high-speed internet, television streaming services such as SledováníTV and Skylink, and telephone services. The website reflects a professional and community-oriented business model with clear contact information and partner affiliations. Technically, the website employs standard web technologies including jQuery and responsive CSS with support for dark mode. The site is mobile-optimized and features a clean, navigable design. However, there is no evidence of a CMS or advanced analytics tools in the provided HTML. Performance appears moderate with good SEO practices but basic accessibility features. From a security perspective, the site uses HTTPS and secure form submission methods but lacks visible security headers and explicit privacy or cookie policies, which are important for GDPR compliance. The absence of WHOIS data for the domain reduces trust from a domain registration standpoint, though the website content and contact details suggest a legitimate operation. No WAF or blocking mechanisms were detected, and no adult or explicit content is present. Overall, JM-Networks s.r.o. presents a credible and professional online presence with room for improvement in privacy compliance and security hardening. The missing WHOIS data is a notable concern that should be investigated further to ensure domain legitimacy and trustworthiness.

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

    • 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 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 jmnet.cz

This scan found 19 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

Email alerts on material changes and an exportable JSON history of every change.

Billed monthly to your card. Cancel anytime. The full timeline opens with your unlock code.

Full report

€39.90one-time

  • The complete analysis as a PDF you can cite
  • Email delivery with an unlock code
  • Lifetime access to this report

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
62
Security headers
35
Email security
100
DNS health
85
Network security
40
GDPR outside view
10
Average
55

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

JM-Networks s.r.o. holds a niche position as a regional ISP and TV service provider with a community focus in Prague. Their competitive advantage lies in offering bundled services (internet, TV, phone) with additional community benefits such as events and education. The business model is subscription-based targeting residential and business customers. The presence of partner logos indicates strategic alliances enhancing service offerings. Growth indicators include recent news updates and active customer engagement. The company appears to operate as a small-sized entity with a clear local market focus and no visible parent or subsidiary companies. The website content and structure support a trustworthy and professional brand image.

Security posture

The security posture of the website is moderate. HTTPS is used, and login forms employ POST methods, indicating basic security awareness. However, the lack of security headers such as Content-Security-Policy, X-Frame-Options, and HSTS reduces protection against common web attacks. No vulnerability disclosure or incident response information is provided, which limits transparency and readiness for security incidents. Privacy and cookie policies are absent, impacting GDPR compliance. No analytics or tracking scripts were detected, which reduces privacy risks but also limits user behavior insights. Overall, the site would benefit from enhanced security configurations, explicit privacy compliance measures, and published incident response contacts to improve trust and resilience.

Recommendations

  1. Implement comprehensive privacy and cookie policies to ensure GDPR compliance and user transparency.
  2. Add and configure security headers including Content-Security-Policy, X-Frame-Options, X-Content-Type-Options, and Strict-Transport-Security.
  3. Investigate and resolve the missing WHOIS data to improve domain registration transparency and trust.
  4. Publish a security.txt file or vulnerability disclosure policy to facilitate responsible security reporting.
  5. Enhance accessibility features to improve usability and compliance with accessibility standards.

Contact details published on the site

Addresses
Legal name
JM-Networks s.r.o.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
JM-Networks s.r.o.
Description
JM-Networks s.r.o. provides internet and television services with a focus on high speed and quality connectivity. They offer services for family houses, apartment buildings, and businesses, including internet, TV streaming, telephone, and additional community benefits such as events and education.
Key services
Internet connectivity, Television services (SledováníTV, Skylink), Telephone services
Content quality
good
Branding
consistent

Technology

Stack
jQuery 3.3.1, jQuery Validate, CSS media queries for dark mode, SVG graphics
Performance
moderate
Mobile
good
Accessibility
basic
SEO
good

Security

Observed score
60/100
Good practices seen
  • HTTPS usage implied by URL
  • Login forms with POST method

Analytics and tracking

Tracking level
minimal
Privacy practices
poor

Advertising

Transparency
poor

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 detected.
  2. No privacy or cookie policies are present, which is a compliance gap.
  3. Contact information is clearly provided including phone, email, and physical address.
  4. Login forms are present but no advanced security features visible in HTML.
  5. WHOIS data is missing, which is unusual and reduces domain trust.
  6. Website uses modern front-end technologies but no CMS detected.
  7. Partner logos and external links indicate legitimate business relationships.
  8. No analytics or tracking scripts detected in provided HTML.
  9. Content is professional and relevant to telecommunications services.
Technical notes

Notes

The website uses a straightforward technology stack primarily based on jQuery and CSS with responsive design features including dark mode support. The absence of a detected CMS suggests a custom or static site architecture. Performance is moderate with no heavy scripts or trackers detected, which benefits load times. The site is mobile-optimized and SEO-friendly with proper meta tags and structured navigation. However, the lack of modern JavaScript frameworks or advanced backend technologies may limit scalability and feature expansion. Security-related technical debt is evident in missing security headers and privacy compliance features. Hosting provider details are not discernible from the provided data.
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

Reviews of this site

Share your experience with jmnet.cz. Every review is verified by email and published after moderation.

Overall rating
Select a rating
4000 characters remaining

We’ll email you to confirm your review and keep your details private.

Community rating

No published reviews yet. Be the first to review jmnet.cz.

Feedback on this report

Rate this report, add an optional comment, and tell us if you want a security specialist to follow up.

Overall report quality
Select a rating
2000 characters remaining

We only use your feedback to improve Guard reports. Contact details are never shared.