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Security report for nextbike.de

nextbike GmbH · Transportation · Germany

Medium risk. 6 critical or high findings in GDPR outside view, SSL/TLS and 1 other check.

Security score

62/100

Risk levelMedium

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

nextbike GmbH operates a leading bike-sharing platform active in over 300 cities worldwide, primarily targeting urban commuters and residents. The company offers app-based bike rentals with flexible tariffs including base rates and subscription models. The website reflects a mature digital presence with strong branding, comprehensive content, and clear user guidance. Technically, the site is built on WordPress with modern frontend components and includes robust SEO and mobile optimization. Security posture is solid with HTTPS, cookie consent, and no visible vulnerabilities, though explicit security policies and incident response contacts are absent. Overall, nextbike presents a trustworthy and professional online presence aligned with its transportation sector business model.

Scanned

NIS2 and GDPR posture

GDPR outside view
43/ 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

6 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 Cookie Policy found

      GDPR requires clear information about cookie usage

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

  2. SSL/TLS

    TLS encrypts the connection and proves the site is really yours. Weak or expiring certificates trigger browser warnings and put traffic at risk.

    • High

      Weak Protocols Supported

      Server supports weak protocols: TLSv1.1

      What to do: Disable TLS 1.0, TLS 1.1, and all SSL versions

      • CWE-327
      • OWASP A04:2025
      • ASVS V12.1.1
    • High

      Weak SSL Key Length

      SSL certificate uses 384-bit key, which is considered weak

      What to do: Use at least 2048-bit RSA or 256-bit ECC key

      • CWE-326
      • OWASP A04:2025
      • Mozilla TLS: Mozilla Server Side TLS 6.0 intermediate: rsa_key_size 2048

  3. DNS health

    DNS sends visitors and email to the right servers. Misconfigured records can cause outages or let someone redirect your traffic.

    • High

      Unregistered MX Record

      MX record points to unregistered domain: mail4.nextbike.net

      What to do: Remove or fix MX record pointing to unregistered domain

      • RFC 5321 §5.1
      • NIS2 21(2)(i)
      • IR 2024/2690 12.4: Implementing Regulation (EU) 2024/2690, Annex point 12.4: Asset inventory
      • NIST CM-8: NIST SP 800-53 Rev. 5 CM-8: System Component Inventory

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

Keep watching nextbike.de

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  • 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
52
Security headers
80
Email security
65
DNS health
30
Network security
100
GDPR outside view
43
Average
62

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 nextbike.de, from OffSeq Breach.

Total records
158
Employees
0
Customers
152
Third parties
6
Weak passwords
84%

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 nextbike.de.

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

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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

nextbike holds a strong market position as a major bike-sharing provider in Germany and internationally, leveraging partnerships with universities and transit authorities. Its business model combines pay-per-use and subscription revenue streams, appealing to both casual and frequent riders. The company benefits from a broad geographic footprint and a unified account system across cities, enhancing customer convenience. The presence of social media channels and customer testimonials supports brand trust and engagement. The affiliation with TIER Mobility suggests strategic backing and potential for integrated mobility solutions.

Security posture

The website demonstrates a good security baseline with enforced HTTPS, use of a reputable cookie consent management plugin (Borlabs Cookie), and no exposed sensitive data. However, the absence of published security policies, incident response contacts, and vulnerability disclosure mechanisms indicates room for improvement in transparency and readiness. Security headers were not explicitly detected in the provided data, suggesting potential enhancement areas. Overall, the security posture is adequate for the business type but could be strengthened to meet higher compliance and trust standards.

Recommendations

  1. Publish a dedicated security policy page outlining security practices and commitments.
  2. Provide clear incident response contact channels such as security@ or abuse@ email addresses.
  3. Implement and publish a vulnerability disclosure policy or security.txt file to encourage responsible reporting.
  4. Add and enforce security headers like Content-Security-Policy, X-Frame-Options, and Strict-Transport-Security.
  5. Regularly review and update third-party scripts and plugins to mitigate potential vulnerabilities.

Contact details published on the site

Addresses
Legal name
nextbike GmbH
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
nextbike GmbH
Description
Einfach Fahrrad mieten, ob für 30 Minuten oder den ganzen Tag. Das nächste Rad ist immer in deiner Nähe. Jetzt registrieren und losradeln.
Key services
Bike rental via app, Subscription plans (monthly, yearly), City-specific bike sharing systems
Content quality
excellent
Branding
consistent

Technology

Stack
WordPress, Yoast SEO, WPBakery Page Builder, Borlabs Cookie, jQuery, Angular (ng-select component), Font Awesome 6
Frameworks
Angular (frontend components)
Platforms
WordPress CMS
Performance
moderate
Mobile
excellent
Accessibility
good
SEO
excellent

Security

Observed score
85/100
Good practices seen
  • HTTPS enforced
  • Cookie consent with granular controls
  • No exposed sensitive data in HTML
  • Use of security-focused cookie plugin (Borlabs Cookie)

Analytics and tracking

Services
Google Analytics
Tracking level
moderate
Privacy practices
good

Advertising

Marketing tools
Borlabs Cookie for consent management
Transparency
good

Site quality

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

Key observations

  1. Website is fully accessible with rich content and no blocking mechanisms.
  2. Strong focus on user experience and mobile optimization.
  3. Comprehensive cookie consent and privacy compliance mechanisms implemented.
  4. Clear contact information and legal pages available.
  5. No explicit security policy or incident response information found.
  6. Use of modern web technologies and CMS.
  7. Social media presence is active and linked.
  8. No suspicious or malicious content detected.
Technical notes

Notes

The website leverages a modern technology stack combining WordPress CMS with Angular components and popular plugins like Yoast SEO and Borlabs Cookie. The use of jQuery and Font Awesome supports rich UI elements. Performance is moderate with good mobile optimization and accessibility features. SEO is well implemented with meta tags, Open Graph, and JSON-LD structured data. Hosting details are not explicit but DNS and WHOIS data indicate stable and professional infrastructure. Opportunities exist to improve security headers and streamline scripts for enhanced performance and security.
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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