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Security report for schranka-duvery.cz

COOLINTSOFT s.r.o. · Education · Czech Republic

Medium risk. 8 critical or high findings in GDPR outside view and Security headers.

Security score

64/100

Risk levelMedium

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

The website www.schranka-duvery.cz is operated by COOLINTSOFT s.r.o. and provides an online trust box service targeted at primary and secondary schools in the Czech Republic. The platform enables anonymous, secure communication between students, parents, and designated school staff, primarily prevention methodologists. The business model is subscription-based with a free trial month and yearly prepaid plans. The website content is well-structured, professionally designed, and focused on its niche educational audience. Technically, the site uses a modern front-end stack including jQuery, Font Awesome, Google Fonts, and animation libraries. It is mobile-optimized and includes CAPTCHA protection on its contact form. However, no CMS or hosting provider information is evident, and some SEO and accessibility features are basic. The site uses HTTPS with a valid SSL certificate but lacks security headers and cookie consent mechanisms. From a security perspective, the site demonstrates good practices such as HTTPS enforcement and CAPTCHA use but misses important headers and explicit security or incident response policies. The absence of WHOIS data for the domain reduces trust and raises questions about domain registration legitimacy. No tracking or advertising scripts are present, indicating a privacy-conscious approach. Overall, the website is functional, professional, and safe for its intended audience but would benefit from improved security headers, cookie consent compliance, and transparency regarding domain registration to enhance trust and compliance.

Scanned

This is an earlier scan of schranka-duvery.cz. View the latest report

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

8 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

  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 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';…

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Keep watching schranka-duvery.cz

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  • TLS certificates and expiry
  • DNS records
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  • 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
95
Security headers
20
Email security
85
DNS health
75
Network security
100
GDPR outside view
10
Average
64

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

Breach exposure

Leaked credentials and lookalike domains from OffSeq Breach. The counts are free; the detailed lists are paid add-ons.

Dark web exposure

Add-on

Leaked records that mention schranka-duvery.cz, from OffSeq Breach.

Total records
45
Employees
0
Customers
45
Third parties
0
Weak passwords
24%

2 subdomains affected

See the 10 newest leaked credentials

A one-off add-on to this report that lists the most recent identifier and password pairs OffSeq Breach holds for schranka-duvery.cz.

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Technical appendix

Business context, site observations and technical notes gathered during the scan, and the standards behind each reference.

Business context

Business profile

COOLINTSOFT s.r.o. occupies a niche market providing online trust box solutions for Czech educational institutions. Their competitive advantage lies in offering anonymity, secure communication, and 24/7 support tailored to schools. The subscription model with a free trial lowers entry barriers for schools. The company leverages media coverage and testimonials to build credibility. The target customers are schools, students, and parents within the Czech Republic. Growth potential exists in expanding coverage and adding features. The partnership ecosystem is not explicitly detailed, and no related domains or subsidiaries are identified. The company maintains a focused, small-scale operation with consistent branding and clear business information.

Security posture

The website's security posture is moderate to good. HTTPS is properly implemented with a valid SSL certificate, and CAPTCHA protects the contact form from spam. However, the absence of security headers such as Content-Security-Policy, X-Frame-Options, and X-Content-Type-Options is a notable gap. No incident response or security policy information is published, and no vulnerability disclosure mechanism is present. The lack of WHOIS data for the domain is a significant concern, potentially indicating registration or privacy issues. No exposed sensitive data or vulnerable libraries were detected. Overall, the site is secure for general use but could improve compliance and resilience by adopting recommended security headers and transparency measures.

Recommendations

  1. Implement HTTP security headers including Content-Security-Policy, X-Frame-Options, and X-Content-Type-Options to enhance protection against common web attacks.
  2. Add a cookie consent banner or mechanism to comply fully with EU GDPR cookie regulations.
  3. Publish a clear security policy and incident response contact information to improve transparency and trust.
  4. Consider creating a vulnerability disclosure policy or security.txt file to facilitate responsible reporting of security issues.
  5. Verify and update domain WHOIS information to ensure legitimacy and improve trustworthiness.

Contact details published on the site

Legal name
COOLINTSOFT s.r.o.
VAT number
CZ03787818
Registration number
03787818
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
COOLINTSOFT s.r.o.
Description
Online trust box application for primary and secondary schools enabling anonymous and secure communication between students/parents and school prevention methodologists.
Key services
Online anonymous messaging, Secure communication platform, User management for school staff, 24/7 technical support
Content quality
good
Branding
consistent

Technology

Stack
jQuery, Font Awesome, Google Fonts, Animate.css, WOW.js, Flexslider, Swipebox, TipTip
Performance
moderate
Mobile
good
Accessibility
basic
SEO
basic

Security

Observed score
80/100
Good practices seen
  • HTTPS enforced
  • SSL certificate present
  • CAPTCHA on contact form
  • No exposed sensitive data in HTML

Analytics and tracking

Tracking level
minimal
Privacy practices
good

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 rich content in Czech language.
  2. No WHOIS data available, which is unusual and reduces domain trust.
  3. No privacy or cookie consent banners despite GDPR relevance.
  4. Contact information is clearly provided with company details.
  5. No visible security headers detected in HTML source.
  6. No social media links found on the site.
  7. No terms of service or security policy pages found.
  8. Website uses modern front-end libraries and fonts.
  9. No analytics scripts actively loaded (Google Analytics commented out).
  10. No advertising or tracking scripts detected.
Technical notes

Notes

The website uses a modern front-end technology stack with jQuery, Font Awesome icons, Google Fonts, and animation libraries such as Animate.css and WOW.js. The site is mobile-optimized and includes interactive elements like a contact form with CAPTCHA. No CMS or backend platform is explicitly identified. Performance is moderate with no obvious blocking scripts or heavy resources. SEO is basic with meta tags for description and keywords but no Open Graph or JSON-LD structured data. Accessibility features are minimal but present. No analytics or tracking scripts are actively used, indicating a privacy-focused approach. The site could benefit from improved SEO metadata and accessibility enhancements.
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. 64/100Medium30 findingsView report
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