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Security report for onleihe.de

divibib GmbH · Technology · Germany

Medium risk. 4 critical or high findings in Security headers, GDPR outside view and 1 other check.

Security score

71/100

Risk levelMedium

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

divibib GmbH operates a professional digital lending platform primarily focused on library users and institutions, offering services such as the Onleihe platform for e-books and digital media. The company is positioned as a leading provider in the digital library sector in Germany, supported by its parent company ekz Bibliotheksservice GmbH. The website demonstrates a mature digital presence with good content quality, clear navigation, and comprehensive user support resources. Technically, the site uses modern frameworks like React and privacy-conscious analytics tools such as Matomo, indicating a commitment to user privacy and modern web standards. However, the absence of WHOIS data for the domain www.divibib.com introduces some uncertainty regarding domain registration transparency. Security posture is moderate, with cookie consent mechanisms in place but lacking visible security headers and explicit incident response policies. Overall, the website is trustworthy and professional but would benefit from enhanced security configurations and improved domain registration transparency.

Scanned

NIS2 and GDPR posture

GDPR outside view
65/ 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

4 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 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 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

  3. 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

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

Keep watching onleihe.de

This scan found 22 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.

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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
72
Security headers
45
Email security
65
DNS health
80
Network security
100
GDPR outside view
65
Average
71

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

Technical appendix

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

Business context

Business profile

The company targets libraries and end-users of digital lending services, leveraging a B2B and B2C business model. Its competitive advantage lies in being a leading digital library solution provider in Germany, integrated with the ekz group. Revenue streams likely include licensing and support services for libraries. The partnership ecosystem includes official Onleihe help sites and user forums, enhancing community engagement. The business shows signs of digital maturity with a modern CMS and analytics integration. Strategic observations suggest opportunities for growth through enhanced security and transparency to strengthen trust further.

Security posture

The security maturity level is moderate. The website employs HTTPS and cookie consent mechanisms, reflecting basic compliance with privacy regulations. However, the lack of detected security headers such as Content Security Policy, HSTS, or X-Frame-Options indicates room for improvement. No vulnerabilities or exposed sensitive data were found in the HTML content. The absence of explicit incident response or security policy pages suggests limited public-facing security governance documentation. Compliance with GDPR is evident through privacy and cookie policies. The security culture appears cautious but could be enhanced by formalizing security policies and improving technical defenses.

Recommendations

  1. Implement comprehensive HTTP security headers including CSP, HSTS, and X-Frame-Options to harden the website against common attacks.
  2. Ensure domain WHOIS information is properly registered and publicly available to improve transparency and trust.
  3. Develop and publish explicit security and incident response policies accessible to users and partners.
  4. Regularly audit third-party scripts and analytics tools to mitigate potential vulnerabilities.
  5. Enhance accessibility features and conduct periodic security assessments to maintain compliance and user trust.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
divibib GmbH
Description
Die divibib GmbH macht die digitale Bibliotheksausleihe einfach. Führende Lösung für E-Books, E-Audios, E-Paper und E-Learning in Bibliotheken mit weiteren Apps und Services.
Key services
Onleihe digital lending platform, Support and help resources for users, Apps and additional digital services
Content quality
good
Branding
consistent

Technology

Stack
Matomo Analytics, React (data-react-helmet tags), Font Awesome 6, PIM.RED CMS
Frameworks
React
Performance
moderate
Mobile
good
Accessibility
basic
SEO
good

Security

Observed score
70/100
Good practices seen
  • Cookie consent mechanism implemented
  • No exposed sensitive data in HTML

Analytics and tracking

Services
Matomo
Tracking level
moderate
Privacy practices
good

Advertising

Tracking pixels
Matomo
Marketing tools
Matomo Analytics, IndivSurvey
Transparency
good

Site quality

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

Key observations

  1. Website is fully accessible with no blocking or WAF detected.
  2. Content is professional, focused on digital library lending services.
  3. Comprehensive privacy and cookie policies present.
  4. WHOIS data is missing, which is a concern for domain legitimacy.
  5. Multiple external trusted domains linked for support and resources.
  6. Use of Matomo analytics indicates privacy-conscious tracking.
  7. No security headers detected in provided data; recommend improvement.
  8. No explicit security or incident response policies found on site.
Technical notes

Notes

The website is built using React and managed via the PIM.RED CMS by Wirth & Horn Informationssysteme GmbH, indicating a modern and scalable infrastructure. It integrates Matomo analytics for privacy-focused user tracking and uses Font Awesome 6 for iconography. The site is mobile optimized with good SEO practices and clear metadata including Open Graph tags. Performance is moderate, with asynchronous loading of scripts. However, no explicit hosting provider or SSL configuration details were found. The technical stack is solid but could benefit from enhanced security headers and performance optimizations.
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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