Skip to main content

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 messaging between students, parents, and designated school staff such as prevention methodologists, facilitating secure and confidential communication. The business model is subscription-based with a free trial and yearly prepaid plans, positioning the company as a niche provider in the educational technology sector within the Czech market. Technically, the website employs a modern front-end stack including jQuery, Font Awesome, Google Fonts, and animation libraries such as Animate.css and WOW.js. The site is mobile-optimized with good navigation and SEO practices. The presence of HTTPS and CAPTCHA on forms indicates a baseline security posture, although the absence of security headers and cookie consent mechanisms suggests room for improvement in compliance and security hardening. From a security perspective, the site demonstrates good practices such as SSL encryption and secure form handling but lacks advanced HTTP security headers and explicit privacy banners. The WHOIS data for the domain is unavailable, which raises concerns about domain registration legitimacy and reduces overall trustworthiness. However, the website content and business information appear professional and credible. Overall, the website scores moderately high on content quality, technical implementation, and business credibility but is slightly penalized for privacy compliance gaps and missing WHOIS transparency. Strategic recommendations include implementing security headers, adding cookie and privacy consent banners, verifying domain registration details, and publishing security policies to enhance trust and compliance.

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

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';…

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

Keep watching schranka-duvery.cz

This scan found 21 issues across 6 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. See sample alerts.

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
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.

Select it in the checkout above.

Breach keeps ingesting new leaks, so these numbers can grow between scans.

Open in Breach(opens in a new tab)Monitor on Breach(opens in a new tab)

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. operates in the education sector, providing a specialized SaaS platform for schools to facilitate anonymous communication. The company targets Czech primary and secondary schools, offering a unique value proposition that addresses privacy and accessibility concerns of traditional trust boxes. The subscription pricing model with a free trial encourages adoption and retention. Media coverage and customer testimonials support market credibility. The absence of social media presence and limited advertising suggests a focused, organic growth strategy. The company maintains direct contact channels and 24/7 support, indicating a customer-centric approach. The lack of WHOIS data transparency is a potential risk factor for partnerships and trust but does not currently impact operational credibility.

Security posture

The website enforces HTTPS and uses CAPTCHA to protect form submissions, reflecting a foundational security posture. However, the absence of key security headers such as Content-Security-Policy, X-Frame-Options, and HSTS reduces protection against common web attacks like clickjacking and protocol downgrade attacks. No vulnerabilities or exposed sensitive data were detected in the HTML content. Privacy compliance is partial, with a privacy policy available but no cookie consent mechanism. Incident response and security policy information are not published, limiting transparency. Overall, the security maturity is moderate, suitable for the business scale but requiring enhancements to meet higher compliance standards such as GDPR fully.

Recommendations

  1. Implement HTTP security headers including Content-Security-Policy, X-Frame-Options, X-Content-Type-Options, and HSTS to strengthen web security.
  2. Add cookie consent banners and explicit privacy notices to ensure full GDPR compliance and improve user trust.
  3. Verify and publish domain WHOIS registration details to enhance legitimacy and trustworthiness.
  4. Develop and publish a formal security policy and incident response contact information to improve transparency and preparedness.
  5. Regularly update all JavaScript libraries and dependencies to mitigate potential vulnerabilities.

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 allowing anonymous messaging with school prevention methodologists.
Key services
Online anonymous messaging platform, Message management by school staff, 24/7 technical support, Secure SSL encrypted communication
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
good

Security

Observed score
80/100
Good practices seen
  • HTTPS enforced
  • CAPTCHA on contact form
  • No exposed sensitive data in HTML
  • Secure form submission via AJAX

Analytics and tracking

Services
Google Analytics (commented out)
Tracking level
minimal
Privacy practices
basic

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, indicating possible domain registration or WHOIS server issues
  3. No privacy or cookie banners despite GDPR relevance
  4. Contact form uses CAPTCHA and requires consent for personal data processing
  5. No visible security headers detected in HTML source
  6. Google Analytics script is present but commented out, indicating privacy consideration
  7. No social media links found
  8. Business info clearly stated with company registration and VAT numbers
  9. No advertising or tracking scripts detected
  10. Website uses modern fonts and animation libraries
Technical notes

Notes

The website uses a combination of popular front-end libraries such as jQuery, Font Awesome, and Google Fonts, ensuring a visually appealing and responsive user interface. The use of animation libraries like Animate.css and WOW.js enhances user experience. The site is mobile-optimized and has good SEO metadata. However, no CMS or backend technology is explicitly detected. Performance is moderate, with some large background images and multiple external font requests. The AJAX-based contact form with CAPTCHA improves usability and security. The lack of advanced security headers and cookie consent mechanisms indicates technical debt in compliance and security best practices.
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
Reviews of this site

Share your experience with schranka-duvery.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 schranka-duvery.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.