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Security report for aquahoteldecin.cz

Děčínská sportovní, příspěvková organizace · Hospitality · Czech Republic

Medium risk. 8 critical or high findings in Security headers, GDPR outside view and 1 other check.

Security score

63/100

Risk levelMedium

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

The website booking.previo.app hosts a direct online booking platform for Aqua Hotel, operated by Děčínská sportovní, a Czech hospitality organization. The platform facilitates hotel reservations with clear business and contact information, supporting multiple languages and currencies. The site includes comprehensive privacy and cookie policies with consent mechanisms, and detailed terms of service including cancellation policies. The business targets general audiences seeking accommodation in Děčín, Czech Republic, positioning itself as a small local hospitality provider with direct booking capabilities. Technically, the website employs modern JavaScript libraries, Google Tag Manager, and analytics tools such as Smartlook and Contentsquare. The design is responsive and user-friendly, with good navigation and content relevance. However, some security best practices like security headers are missing, representing an area for improvement. The SSL configuration is good, and no critical vulnerabilities or exposed sensitive data were detected. From a security and compliance perspective, the site demonstrates good GDPR compliance with clear privacy disclosures and cookie consent. Incident response and security policy details are not explicitly provided, which could be enhanced. No suspicious or adult content is present, making the site safe for general users. The domain registration aligns well with the business entity, supporting legitimacy. Overall, the website is a professionally maintained hospitality booking platform with solid privacy and compliance posture, moderate technical sophistication, and room for security enhancements. Strategic recommendations include implementing security headers, enhancing incident response transparency, and continuous monitoring of third-party scripts to maintain security and trust.

Scanned

NIS2 and GDPR posture

GDPR outside view
35/ 100 · High
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. 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';…

  2. 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 Policy found

      GDPR requires clear information about cookie usage

      What to do: Add a dedicated cookie policy explaining cookie usage and purposes

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

Keep watching aquahoteldecin.cz

This scan found 24 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.

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Full report

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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
72
Security headers
20
Email security
65
DNS health
85
Network security
100
GDPR outside view
35
Average
63

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 aquahoteldecin.cz, from OffSeq Breach.

No leaked records found

Breach holds no records for aquahoteldecin.cz right now. New leaks arrive continuously, so monitoring on Breach alerts you if that changes.

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

The business operates in the hospitality sector, focusing on direct hotel bookings for Aqua Hotel in Děčín, Czech Republic. It leverages a direct-to-customer online booking model, eliminating intermediaries, which can improve margins and customer relationships. The presence of multiple languages and currencies indicates an intent to serve both local and international guests. The company is a small-sized entity, likely publicly funded or municipal given its status as a 'příspěvková organizace'. Revenue streams primarily come from accommodation bookings, with additional services like parking and pet accommodation. The partnership ecosystem includes analytics and marketing service providers but no evident strategic business partners or subsidiaries. Growth indicators are limited but the platform's multi-language support and direct booking capabilities suggest a focus on customer experience and market reach.

Security posture

The website enforces HTTPS, uses secure session cookies, and avoids exposing sensitive data in the HTML content. However, it lacks implementation of key security headers such as Content Security Policy, HSTS, and X-Frame-Options, which are important for mitigating common web attacks. The use of third-party analytics and tracking scripts introduces potential risk vectors that require regular auditing. No explicit incident response or security policy information is available, indicating a gap in transparency and preparedness. GDPR compliance is well addressed through detailed privacy and cookie policies with consent mechanisms. Overall, the security maturity is moderate, with foundational protections in place but opportunities for strengthening defenses and incident readiness.

Recommendations

  1. Implement comprehensive HTTP security headers including CSP, HSTS, and X-Frame-Options to enhance protection against common web vulnerabilities.
  2. Publish a dedicated security policy and incident response plan to improve transparency and preparedness.
  3. Regularly audit and update third-party scripts and libraries to mitigate potential vulnerabilities.
  4. Enhance accessibility compliance to improve user experience for all visitors.
  5. Maintain and update privacy and cookie policies to ensure ongoing GDPR compliance and user trust.

Contact details published on the site

Addresses
Legal name
Děčínská sportovní, příspěvková organizace
Registration number
75107350
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
Děčínská sportovní, příspěvková organizace
Description
Hotel Aqua je malý hotel v areálu aquaparku, v blízkosti historického centra města Děčín a Labské cyklostezky. Provozovatel: Děčínská sportovní, příspěvková organizace, sídlo Oblouková 1400/6, Děčín.
Key services
Hotel accommodation, Online reservation, Parking, Internet access, Pet accommodation (for fee)
Content quality
good
Branding
consistent

Technology

Stack
JavaScript, jQuery, Google Tag Manager, Smartlook, Bootstrap
Frameworks
Bootstrap
Platforms
Previo booking platform
Performance
moderate
Mobile
good
Accessibility
basic
SEO
basic

Security

Observed score
75/100
Good practices seen
  • HTTPS enforced
  • No exposed sensitive data in HTML
  • Use of secure session cookie PHPSESSID

Analytics and tracking

Services
Google Analytics, Smartlook, Contentsquare
Tracking level
moderate
Privacy practices
good

Advertising

Tracking pixels
Smartlook, Contentsquare
Transparency
basic

Site quality

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

Key observations

  1. Website provides a direct booking platform for Aqua Hotel in Děčín, Czech Republic.
  2. Comprehensive privacy and cookie policies are presented with consent mechanisms.
  3. Terms of service and cancellation policies are clearly stated.
  4. Contact information including email, phone, and physical address is clearly provided.
  5. Use of modern tracking and analytics tools with basic advertising transparency.
  6. No security headers detected; opportunity for security improvements.
  7. No evidence of adult or questionable content; safe for general audiences.
  8. No WAF or blocking detected; content fully accessible.
Technical notes

Notes

The website is built on a JavaScript-heavy front end using libraries such as jQuery and Bootstrap for responsive design. It integrates Google Tag Manager for analytics and marketing tag management, along with Smartlook and Contentsquare for user behavior analytics. The platform appears to be a custom or proprietary booking system (Previo). Performance is moderate with asynchronous script loading and a loading mask for user feedback. SEO is basic with meta tags and language options but could be improved with structured data and enhanced accessibility features. Hosting details are not explicit, but the use of HTTPS and external analytics indicates a professionally managed infrastructure. Technical risks include missing security headers and reliance on multiple third-party scripts which require vigilant management.
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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