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Security report for slys.to

Slyš.to s.r.o. · Media · Czech Republic

Partial score · DNS & email only

75/100

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

Slyš.to s.r.o. operates a Czech-language e-commerce platform specializing in audiobooks with a focus on spirituality, Christian themes, personal development, and children's stories. The website offers both paid and free audiobooks, targeting a general audience interested in faith-based and educational audio content. The company positions itself as a niche leader within the Czech Christian audiobook market, leveraging its association with Radio Proglas to build trust and authenticity. Technically, the website employs a modern tech stack including jQuery, Video.js for media playback, and CookieHub for consent management. It integrates Google Analytics and Facebook Pixel with appropriate consent controls, demonstrating a mature approach to user privacy and tracking. The site is mobile-optimized with good SEO practices and a clean, professional design that supports a positive user experience. From a security perspective, the site enforces HTTPS and manages cookie consent effectively, but lacks explicit security policies and incident response contacts. No critical vulnerabilities or exposed sensitive data were detected. The WHOIS data aligns well with the business profile, showing transparency and legitimacy. Overall, the site maintains a good security posture but could improve by publishing dedicated security and incident response information. The overall risk is low, with strong privacy compliance and business credibility. Strategic recommendations include enhancing security transparency, adding security headers, and providing incident response contacts to further strengthen trust and resilience.

Scanned

NIS2 and GDPR posture

GDPR outside view
50/ 100 · Medium
Checks completed
6of 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

4 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.

    • 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 Consent Banner found

      GDPR requires explicit consent for non-essential cookies

      What to do: Implement a cookie consent banner that appears on first visit

    • High

      Third-party services without privacy policy

      Detected services: Google Analytics, Facebook, Google APIs

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

  2. Email security

    SPF, DKIM and DMARC stop others sending email that looks like it comes from your domain, a common route to phishing and invoice fraud.

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

Keep watching slys.to

This scan found 17 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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Full report

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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
95
Email security
60
DNS health
70
Network security
100
GDPR outside view
50
Average
75

Not counted

  • Security headers: did not complete in this scan.
  • 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

Slyš.to operates in a specialized segment of the media industry, focusing on Christian and spiritual audiobooks in the Czech Republic. Its business model centers on direct digital sales and free content distribution to build community engagement. The company leverages its niche positioning and association with Radio Proglas to differentiate itself from broader audiobook platforms. Revenue streams likely include audiobook sales and possibly donations or sponsorships aligned with its non-profit Christian orientation. The website's partnership ecosystem includes social media engagement primarily via Facebook. Growth indicators include a regularly updated catalog and newsletter subscription. The company maintains a consistent brand and content strategy aligned with its target audience.

Security posture

The website demonstrates a moderate to good security maturity level with enforced HTTPS, cookie consent management, and controlled use of third-party analytics and marketing pixels. However, it lacks published security policies, incident response contacts, and advanced security headers, which are important for comprehensive security governance and compliance. No vulnerabilities or sensitive data exposures were identified in the analysis. GDPR compliance is well addressed through privacy and cookie policies. The absence of a vulnerability disclosure program or security.txt file indicates room for improvement in transparency and community engagement on security matters.

Recommendations

  1. Publish a dedicated security policy page outlining security practices and commitments.
  2. Provide clear incident response contact information such as security@ or abuse@ email addresses.
  3. Implement HTTP security headers including Content-Security-Policy, X-Frame-Options, and X-Content-Type-Options.
  4. Regularly audit and update third-party scripts to mitigate potential vulnerabilities.
  5. Consider establishing a vulnerability disclosure policy or security.txt file to encourage responsible reporting.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
Slyš.to s.r.o.
Description
Portál Slyš.to nabízí audioknihy a mluvené slovo zaměřené na osobní rozvoj, spiritualitu, víru, beletrii a pohádky pro děti. Obsah je dostupný online, s možností okamžitého poslechu. Nabízí také vybrané audioknihy zdarma. Web je provozován křesťany okolo Radia Proglas a klade důraz na kvalitní a ekologickou audioknihovou produkci.
Key services
Audiobook sales, Free audiobook distribution, Newsletter subscription
Content quality
good
Branding
consistent

Technology

Stack
jQuery, Video.js, Venobox, Google Fonts, Google Analytics, Facebook Pixel, CookieHub
Performance
moderate
Mobile
good
Accessibility
basic
SEO
good

Security

Observed score
75/100
Good practices seen
  • HTTPS enforced
  • Cookie consent management
  • Google Analytics and Facebook Pixel consent management
  • Removal of analytics cookies if consent denied

Analytics and tracking

Services
Google Analytics, Google Analytics 4
Tracking level
moderate
Privacy practices
good

Advertising

Tracking pixels
Facebook Pixel
Marketing tools
CookieHub, Facebook Pixel
Transparency
basic

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.
  2. Strong focus on Czech Christian audiobook niche.
  3. Comprehensive cookie consent and privacy compliance.
  4. No exposed sensitive data or security misconfigurations detected.
  5. Use of standard analytics and marketing pixels with consent management.
  6. No direct contact emails or phone numbers visible on main pages; contact form available.
  7. No explicit security or incident response policies published.
  8. No visible security headers detected in provided data.
Technical notes

Notes

The website uses a combination of modern JavaScript libraries and media frameworks such as jQuery, Video.js, and Venobox, supporting rich media content delivery. Google Fonts and Google Analytics integration enhance user experience and analytics capabilities. CookieHub is used for consent management, reflecting compliance with privacy regulations. The site is mobile-optimized and structured with good SEO metadata and Open Graph tags. Performance is moderate, with asynchronous loading of key scripts. No CMS or hosting provider details were detected, suggesting a custom or proprietary platform. Accessibility is basic but functional. Opportunities exist to improve technical SEO and accessibility further.
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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