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Security report for nabu.de

NABU - Naturschutzbund Deutschland e.V. · Non-profit · Germany

Medium risk. 4 critical or high findings in Security headers and SSL/TLS.

Security score

69/100

Risk levelMedium

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

NABU - Naturschutzbund Deutschland e.V. is a well-established German non-profit organization dedicated to nature conservation and environmental protection. With a history spanning over 125 years, NABU engages a broad audience through campaigns, education, membership, and fundraising. Their website reflects a professional and comprehensive digital presence, emphasizing transparency, community involvement, and environmental advocacy. The organization leverages modern web technologies and analytics while maintaining strong privacy and cookie consent compliance. Contact information and multiple engagement channels are clearly provided, enhancing user trust and accessibility. Technically, the website is built on the IMPERIA CMS platform and integrates advanced analytics tools such as Matomo and Google Tag Manager, alongside marketing pixels from Facebook and TikTok. The site is mobile-optimized, accessible, and SEO-friendly, though some security headers could be explicitly declared to enhance security posture. HTTPS is enforced, and no critical vulnerabilities or exposed sensitive data were detected. From a security perspective, NABU demonstrates good practices including bot detection on forms and cookie consent management. However, the absence of a public security policy or incident response contact is noted. The WHOIS data aligns well with the organization's identity, showing a consistent and trustworthy domain registration. Overall, the website scores highly on content quality, technical implementation, privacy compliance, and business credibility, making it a reliable and professional platform for environmental advocacy. Recommendations include enhancing security headers, publishing a security policy, and continuous monitoring of third-party scripts to maintain privacy and security standards. These steps will further solidify NABU's digital trustworthiness and compliance in an evolving regulatory landscape.

Scanned

NIS2 and GDPR posture

GDPR outside view
83/ 100 · Low
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 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. 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 nabu.de

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.

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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
20
Email security
70
DNS health
65
Network security
100
GDPR outside view
83
Average
69

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 nabu.de, from OffSeq Breach.

Total records
27
Employees
0
Customers
27
Third parties
0
Weak passwords
7%

3 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 nabu.de.

Select it in the checkout above.

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

Technical appendix

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

Business context

Business profile

NABU holds a leading position in the German environmental non-profit sector, leveraging a diversified business model based on memberships, donations, educational services, and partnerships. Their extensive campaign portfolio and digital engagement platforms indicate a mature ecosystem with strong community ties. The organization benefits from a long-standing reputation and transparent communication, which supports sustained growth and influence. Strategic partnerships with dedicated platforms like NABU-Shop and NABU-Wissen enhance their service offerings and revenue streams. The target audience includes environmentally conscious individuals, activists, and supporters primarily in Germany. NABU's digital presence reflects a commitment to accessibility, education, and advocacy, positioning them well for continued impact in nature conservation.

Security posture

The website exhibits a mature security posture with HTTPS enforced and use of cookie consent management tools. Integration of bot detection mechanisms (MT Captcha) on forms reduces automated abuse risks. Tracking and marketing pixels are implemented with user consent, aligning with GDPR requirements. However, explicit security headers such as Content-Security-Policy, X-Frame-Options, and X-Content-Type-Options are not visibly declared, representing an area for improvement. No vulnerabilities or exposed sensitive data were identified in the HTML content. The absence of a public security policy or incident response contact limits transparency in security governance. Overall, the security maturity is good but can be enhanced by adopting additional HTTP security headers and publishing incident response information.

Recommendations

  1. Implement and explicitly configure HTTP security headers including Content-Security-Policy, X-Frame-Options, and X-Content-Type-Options to mitigate common web attacks.
  2. Publish a clear security policy and provide dedicated incident response contact channels to improve transparency and readiness.
  3. Regularly audit third-party scripts and tracking pixels to ensure ongoing privacy compliance and security.
  4. Enhance monitoring and logging of form submissions and user interactions to detect and respond to potential abuse.
  5. Maintain and update cookie consent mechanisms to reflect evolving regulatory requirements and user expectations.

Contact details published on the site

Addresses
Legal name
NABU - Naturschutzbund Deutschland e.V.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
NABU - Naturschutzbund Deutschland e.V.
Description
Der NABU ist seit 125 Jahren ein Zuhause für alle, die sich für unsere Natur und Umwelt engagieren. Naturschutz kann jede*r. Sie schützen Lebensräume für Tiere und Pflanzen, begeistern für Natur und entwickeln Lösungen für Natur- und Klimakrise.
Key services
Nature and species protection, Environmental education, Campaigns and projects, Membership and volunteer engagement, Fundraising and donations, Information and advisory services
Content quality
excellent
Branding
consistent

Technology

Stack
IMPERIA CMS 8.6.0, Matomo Analytics, Google Tag Manager, Facebook Pixel, TikTok Pixel, Klaro Cookie Consent, ReadSpeaker, Swiper.js
Performance
moderate
Mobile
good
Accessibility
good
SEO
good

Security

Observed score
85/100
Good practices seen
  • HTTPS enforced
  • Cookie consent management via Klaro
  • No exposed sensitive data in HTML
  • Use of security cookies for bot detection (MT Captcha)
  • No inline scripts with sensitive data

Analytics and tracking

Services
Matomo, Google Analytics (via GTM)
Tracking level
moderate
Privacy practices
good

Advertising

Ad networks
Google Ads
Tracking pixels
Facebook Pixel, TikTok Pixel, Matomo
Marketing tools
Matomo Analytics
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 no blocking or WAF challenges.
  2. Content is comprehensive, professionally presented, and well-structured.
  3. Strong privacy and cookie consent mechanisms are implemented.
  4. Multiple contact channels including phone, email, and forms are available.
  5. Use of modern analytics and marketing tools with user consent.
  6. No security policy or incident response information publicly available.
  7. No vulnerability disclosure or security.txt found.
  8. Website uses a German CMS (IMPERIA) and integrates accessibility features.
  9. Social media presence is strong and consistent with brand.
  10. Donation and membership engagement are prominently featured.
Technical notes

Notes

The website is powered by IMPERIA CMS version 8.6.0, a German content management system tailored for complex content structures. It uses modern JavaScript libraries such as Swiper.js for UI components and integrates accessibility features like ReadSpeaker. Analytics are handled primarily via Matomo with supplementary Google Tag Manager and marketing pixels from Facebook and TikTok. The site is mobile-optimized and demonstrates good SEO practices with proper meta tags and Open Graph data. Performance is moderate, likely influenced by multiple external scripts and rich media content. No major technical debt or deprecated technologies were detected. Opportunities exist to improve security headers and optimize script loading 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

Earlier scans of this domain

  1. 69/100 +2Medium32 findingsView report
  2. 67/100Medium33 findingsView report
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