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Security report for buchkatalog.de

Buchkatalog · Retail · Germany

Medium risk. 5 critical or high findings in GDPR outside view, Security headers and 1 other check.

Security score

70/100

Risk levelMedium

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

Buchkatalog.de is a German online bookstore offering millions of books with options for local pickup and shipping. It operates a large network of bookstores and provides advanced search capabilities for customers. The website uses modern web technologies including Next.js and React, and integrates Google Tag Manager for analytics. The site is well-structured, mobile-optimized, and provides a good user experience with clear navigation and professional design. However, it lacks visible privacy and cookie policies, security headers, and explicit contact information such as emails or phone numbers, which are important for trust and compliance. The domain appears legitimate with active registration and appropriate name servers, though registrant details are not fully disclosed. Overall, the site is functional and professional but could improve its privacy compliance and security posture.

Scanned

NIS2 and GDPR posture

GDPR outside view
40/ 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

5 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

    • 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

  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 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';…

  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 buchkatalog.de

This scan found 20 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

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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
77
Security headers
50
Email security
85
DNS health
70
Network security
100
GDPR outside view
40
Average
70

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

Buchkatalog.de positions itself as a major player in the German online book retail market, leveraging a broad catalog and a physical bookstore network to offer both online ordering and local pickup. Its business model focuses on e-commerce retail with a target audience of general book buyers in Germany. The site’s integration with local bookstores suggests a hybrid online-offline approach, enhancing customer convenience. The use of Google Tag Manager indicates an interest in marketing analytics and user behavior tracking. The absence of explicit privacy and cookie policies may pose compliance risks under GDPR. The company’s physical address in Erfurt supports its legitimacy and regional presence. No parent or subsidiary companies were identified from the data.

Security posture

The website enforces HTTPS and uses Google Tag Manager for analytics, which is standard practice. However, no security headers such as Content Security Policy, HSTS, or X-Frame-Options were detected, which could expose the site to certain web-based attacks. There is no evidence of exposed sensitive data or vulnerable libraries in the HTML content. The lack of published incident response or vulnerability disclosure policies limits transparency and preparedness for security incidents. Privacy compliance is weak due to missing privacy and cookie policies and no consent mechanisms. Overall, the security posture is moderate but could be significantly improved by implementing security headers, publishing security policies, and enhancing privacy compliance.

Recommendations

  1. Implement and publish a comprehensive privacy policy and cookie policy with GDPR-compliant consent mechanisms.
  2. Add standard security headers such as Content Security Policy (CSP), HTTP Strict Transport Security (HSTS), X-Frame-Options, and X-Content-Type-Options.
  3. Publish incident response and vulnerability disclosure information to improve transparency and security readiness.
  4. Provide clear company contact information including verified support emails and phone numbers to enhance trust and compliance.
  5. Regularly audit and update third-party libraries and tracking tools to minimize vulnerabilities and privacy risks.

Contact details published on the site

Addresses
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
Buchkatalog
Description
Millionen Bücher ✔ Abholung und Versand ✔ Versandkostenfrei ✔ großes Buchhändlernetzwerk ✔ Schnelle Lieferung ✔
Key services
Online book sales, Bookstore finder for local pickup, Advanced book search, Shipping and local pickup
Content quality
good
Branding
consistent

Technology

Stack
React (Next.js), Google Tag Manager, Keen Slider (carousel), Woff2 fonts
Frameworks
Next.js
Performance
moderate
Mobile
good
Accessibility
good
SEO
good

Security

Observed score
70/100
Good practices seen
  • HTTPS enforced (implied by URL)
  • No exposed sensitive data in HTML
  • Use of Google Tag Manager for analytics

Analytics and tracking

Services
Google Tag Manager
Tracking level
moderate
Privacy practices
poor

Advertising

Transparency
basic

Site quality

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

Key observations

  1. Website is a German online bookstore with a large catalog and local bookstore network.
  2. No explicit privacy, cookie, or terms of service policies found in the provided content.
  3. Uses modern web technologies and frameworks (Next.js, React).
  4. Includes Google Tag Manager for analytics and tracking.
  5. No contact emails or phone numbers explicitly found in the HTML content provided.
  6. Physical address found in JSON-LD structured data indicating business location in Erfurt, Germany.
  7. No security headers or explicit security policies detected in the HTML content.
  8. No vulnerability disclosure or incident response information found.
  9. No signs of WAF or content blocking; full content accessible.
Technical notes

Notes

The website is built using modern web technologies, primarily Next.js and React, which support server-side rendering and good performance. The use of Woff2 fonts and image preloading indicates attention to performance optimization. Google Tag Manager is used for analytics and marketing tracking. The site is mobile-optimized and accessible with keyboard navigation features. Hosting appears to be provided by zeitfracht.digital, a professional hosting provider. However, the absence of security headers and privacy policies indicates technical debt in security and compliance areas. Performance is moderate, with potential improvements in SEO and privacy compliance to enhance overall digital maturity.
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. 70/100Medium30 findingsView report
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