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Security report for telly.cz

Telly s.r.o. · Telecommunications · Czech Republic

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

Security score

75/100

Risk levelMedium

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

Telly s.r.o. operates a consumer-focused IPTV television service in the Czech Republic, offering flexible subscription packages with promotional discounts. The company, founded in 2019, positions itself as a modern alternative in the telecommunications sector, targeting Czech consumers seeking quality TV streaming services. The website is professionally designed, leveraging WordPress CMS and integrates multiple marketing and analytics tools to optimize user engagement and advertising effectiveness. The presence of Cookiebot indicates a commitment to privacy compliance, although explicit privacy and terms of service documents were not found in the provided content. Technically, the site uses modern web technologies and is hosted with Cloudflare DNS services, ensuring good performance and security. Security posture is solid with HTTPS and consent management, but could be improved by adding security headers and incident response information. Overall, the domain registration data aligns well with the business claims, supporting legitimacy and trustworthiness.

Scanned

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

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 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';…

  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 SSL Key Length

      SSL certificate uses 256-bit key, which is considered weak

      What to do: Use at least 2048-bit RSA or 256-bit ECC key

      • CWE-326
      • OWASP A04:2025
      • Mozilla TLS: Mozilla Server Side TLS 6.0 intermediate: rsa_key_size 2048

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

Keep watching telly.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.

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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
65
Security headers
30
Email security
75
DNS health
80
Network security
100
GDPR outside view
100
Average
75

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

Telly s.r.o. operates in the telecommunications sector, specifically IPTV services, with a business model based on subscription packages. The company targets Czech consumers interested in flexible and affordable TV streaming options. The website's integration with multiple ad networks and tracking services suggests a revenue model that includes advertising and retargeting. The company maintains an active social media presence on Facebook, YouTube, and Instagram, enhancing brand visibility. The domain age and registration details are consistent with the company's founding year, indicating stable business operations. No evidence of subsidiaries or parent companies was found, suggesting an independent medium-sized enterprise. The use of Cookiebot and structured data reflects a moderate level of digital maturity and compliance awareness.

Security posture

The website demonstrates a good security posture with HTTPS enabled and a cookie consent mechanism via Cookiebot, ensuring GDPR compliance for user tracking. However, no explicit security policy or incident response contacts were found, which are important for transparency and trust. The absence of security headers in the analyzed content suggests room for improvement in hardening the site against common web attacks. No vulnerabilities or exposed sensitive data were detected in the provided HTML content. The use of reputable third-party services like Cloudflare, Google Tag Manager, and Smartlook indicates reliance on secure platforms. Overall, the security maturity is moderate but could benefit from formalized policies and enhanced technical controls.

Recommendations

  1. Implement and publish a comprehensive privacy policy and terms of service documents accessible from the website.
  2. Add security headers such as Content-Security-Policy, X-Frame-Options, and Strict-Transport-Security to improve protection against common web threats.
  3. Publish a security policy and provide incident response contact information (e.g., security@ or abuse@ email addresses) to enhance transparency and trust.
  4. Consider adding a vulnerability disclosure policy or security.txt file to encourage responsible reporting of security issues.
  5. Regularly audit third-party scripts and tracking tools to minimize privacy risks and ensure compliance with evolving regulations.

Contact details published on the site

Addresses
Legal name
Telly s.r.o.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
Telly s.r.o.
Description
Vyberte si z atraktivní nabídky balíčků bez závazků, nebo čerpejte všechny výhody a garantovanou 20 % slevu na 2 roky s Telly.
Key services
Television packages, IPTV streaming, Discounted subscription plans
Content quality
good
Branding
consistent

Technology

Stack
WordPress, jQuery, Gravity Forms, Cookiebot, Google Tag Manager, Smartlook, Cloudflare DNS
Frameworks
WordPress
Platforms
Web
Performance
moderate
Mobile
good
Accessibility
basic
SEO
good

Security

Observed score
75/100
Good practices seen
  • HTTPS enabled
  • Cookie consent mechanism implemented
  • No exposed sensitive data in HTML

Analytics and tracking

Services
Google Analytics, Smartlook, Facebook Analytics
Tracking level
extensive
Privacy practices
good

Advertising

Ad networks
Criteo, Media.net
Tracking pixels
Smartlook, Facebook Pixel, Twitter Pixel, TikTok Pixel, ClickCease
Marketing tools
Cookiebot, Smartlook, EhubClick
Transparency
good

Site quality

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

Key observations

  1. Website uses modern consent management with Cookiebot.
  2. Multiple analytics and marketing tracking tools are integrated.
  3. Business information is clearly presented in structured data.
  4. No explicit privacy policy or terms of service found in the provided content.
  5. Website is built on WordPress with common plugins and scripts.
  6. No security.txt or vulnerability disclosure found.
  7. No incident response or security contact information found.
  8. Website content is professional and targeted at Czech TV consumers.
  9. No WAF or blocking mechanisms detected.
Technical notes

Notes

The website is built on WordPress CMS, utilizing jQuery and several JavaScript libraries for UI components such as accordions, tabs, and sliders. It integrates Google Tag Manager, Cookiebot for consent management, and Smartlook for session recording and analytics. Hosting appears to be supported by Cloudflare DNS and CDN services, contributing to moderate performance and security. The site is mobile-optimized with responsive design and includes SEO best practices such as meta tags and structured data in JSON-LD format. Some technical debt is indicated by multiple analytics and marketing scripts which may impact load times. Accessibility features are basic but present. Opportunities exist to improve performance by optimizing script loading and enhancing accessibility compliance.
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. 73/100Medium28 findingsView report
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