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Security report for rdrn.app

Tobit.Labs · Hospitality · Germany

Medium risk. 7 critical or high findings in Email security, Security headers and 2 other checks.

Security score

66/100

Risk levelMedium

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

The website rdrn.app presents a digital boat rental service located at Schlossgräfte in Ahaus, Germany. It offers a modern, self-service platform allowing users to book and pay for rowing boats via smartphone, reviving a traditional leisure activity with digital convenience. The business operates on the chayns platform, leveraging its ecosystem for app integration and site management. The target audience includes local visitors and tourists interested in unique outdoor experiences. The business model is focused on direct digital bookings with a simple fee and deposit system, positioning itself as a niche local service with a strong emphasis on user autonomy and ease of use. Technically, the site is built using React and chayns frameworks, hosted on Tobit.cloud infrastructure. It employs modern web technologies such as JSON-LD for structured data, Swiper.js for image galleries, and CSS modules for styling. The site is mobile-optimized and performs moderately well, though accessibility features are basic. SEO is supported by proper meta tags and Open Graph data, enhancing social sharing and search visibility. From a security perspective, the site enforces HTTPS and avoids exposing sensitive data in its HTML content. However, it lacks visible security headers and does not provide a cookie consent mechanism or a detailed privacy policy, which are important for GDPR compliance. No incident response or vulnerability disclosure information is available, indicating room for improvement in security transparency and user trust. No suspicious or malicious elements were detected, and the domain registration data aligns well with the business claims, supporting legitimacy. Overall, rdrn.app is a well-structured, user-friendly site serving a specific local market with a digital-first approach. To enhance its security posture and compliance, the business should implement cookie consent, publish comprehensive privacy and security policies, and add security headers. These steps will improve user trust and regulatory adherence while maintaining the site's positive user experience.

Scanned

NIS2 and GDPR posture

GDPR outside view
50/ 100 · Medium
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

7 findings rated critical or high. Fix these first.

  1. 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.

    • Critical

      No email authentication configured

      Domain is vulnerable to email spoofing

      What to do: Implement SPF, DKIM, and DMARC immediately

  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 X-Frame-Options header

      Prevents clickjacking attacks

      What to do: Add "X-Frame-Options: DENY" or "X-Frame-Options: SAMEORIGIN"

  3. 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

    • 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

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

Keep watching rdrn.app

This scan found 23 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

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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
60
Email security
40
DNS health
75
Network security
100
GDPR outside view
50
Average
66

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 rdrn.app, from OffSeq Breach.

No leaked records found

Breach holds no records for rdrn.app 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 and transportation sectors, focusing on leisure boat rentals at a historic location. Its competitive advantage lies in digitizing a traditional service, enabling cashless, app-based bookings and returns. Revenue streams include booking fees and refundable deposits. The target customers are local residents and tourists seeking unique outdoor activities. The company leverages the chayns platform ecosystem, indicating strategic partnerships with Tobit.Labs. Growth potential exists in expanding digital leisure services and enhancing user engagement through app features. The business model emphasizes simplicity and user control, reducing operational overhead. No direct competitors or subsidiaries are identified, suggesting a focused niche operation.

Security posture

The website demonstrates a moderate security maturity level with HTTPS enforced and no visible sensitive data leaks. However, the absence of security headers such as Content-Security-Policy and lack of cookie consent mechanisms highlight compliance gaps, particularly under GDPR. No vulnerability disclosures or incident response contacts are provided, limiting transparency and readiness for security events. The use of modern frameworks reduces some risk, but third-party script audits and enhanced security policies are recommended. Overall, the security posture is functional but requires improvements to meet best practices and regulatory requirements.

Recommendations

  1. Implement a visible cookie consent banner to comply with GDPR and enhance user transparency.
  2. Publish a comprehensive privacy policy detailing data collection, processing, and user rights.
  3. Add security headers like Content-Security-Policy, X-Frame-Options, and Strict-Transport-Security.
  4. Provide clear contact information for security incidents and vulnerability reporting.
  5. Conduct regular security audits of third-party scripts and dependencies to mitigate risks.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
Tobit.Labs
Description
Digital boat rental service at Schlossgräfte in Ahaus, offering easy and cashless booking and rental of rowing boats via smartphone app. The service revives a traditional rowing experience with a modern digital booking and payment system.
Key services
Boat rental booking, Digital payment processing, Self-service boat access and return
Content quality
good
Branding
consistent

Technology

Stack
React, chayns API, Swiper.js, CSS Modules, JSON-LD structured data
Frameworks
React, chayns
Platforms
chayns platform
Performance
moderate
Mobile
good
Accessibility
basic
SEO
good

Security

Observed score
80/100
Good practices seen
  • HTTPS enforced
  • No exposed sensitive data in HTML
  • Use of modern JS frameworks

Analytics and tracking

Tracking level
minimal
Privacy practices
poor

Advertising

Transparency
poor

Site quality

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

Key observations

  1. Website is fully accessible with no blocking or WAF challenges.
  2. Content is primarily in German with multi-language options available.
  3. No explicit privacy or cookie policy pages found, but imprint page exists.
  4. No direct contact emails or phone numbers visible on main pages.
  5. Uses chayns platform extensively for site building and app integration.
  6. No visible advertising or tracking scripts detected.
  7. Focus on local boat rental service with digital self-service model.
Technical notes

Notes

The site uses a modern React-based tech stack integrated with the chayns platform, enabling modular app components and responsive design. Hosting on Tobit.cloud ensures reliable infrastructure. Performance is moderate with optimized images and lazy loading techniques. SEO is supported by structured data and meta tags. Accessibility is basic, with potential for improvement in ARIA roles and keyboard navigation. The technical debt appears low, but adding security headers and cookie management would enhance robustness. Opportunities exist to improve accessibility and privacy compliance features to align with 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

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