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Security report for nabu-bremen.de

NABU Landesverband Bremen 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 Landesverband Bremen e.V. is a well-established non-profit environmental organization active since 1995, focusing on nature conservation, environmental education, and community engagement in Bremen, Germany. The website serves as a comprehensive platform for information dissemination, volunteer coordination, event promotion, and fundraising. It targets nature enthusiasts, families, children, and volunteers, positioning itself as a leading regional environmental advocate with nearly 10,000 members. Technically, the site is built on the IMPERIA CMS platform, utilizing modern JavaScript libraries and analytics tools such as Matomo and Google Tag Manager, with good mobile optimization and accessibility features. Security posture is solid with HTTPS enforced and cookie consent management implemented, though some security headers could be enhanced. Privacy compliance is strong, with clear policies and GDPR adherence. Overall, the website reflects a professional, trustworthy, and user-friendly digital presence supporting the organization's mission.

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-bremen.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-bremen.de, from OffSeq Breach.

No leaked records found

Breach holds no records for nabu-bremen.de 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 organization holds a strong market position as one of Bremen's largest environmental NGOs, leveraging a membership-driven model supplemented by donations and volunteer activities. Its business model is centered on community engagement, education, and conservation projects. The website supports multiple communication channels including social media and newsletters, enhancing outreach and member retention. Partnerships with regional NABU branches and related entities strengthen its ecosystem. The content quality and branding consistency reinforce credibility and trust. Growth indicators include active event programming and volunteer recruitment. The organization maintains transparency through detailed contact information and policy disclosures.

Security posture

The website demonstrates a mature security posture with enforced HTTPS, bot detection via MT Captcha, and cookie consent management through Klaro. No critical vulnerabilities or exposed sensitive data were detected. However, the absence of explicit security headers like Content-Security-Policy and X-Frame-Options suggests room for improvement. The use of third-party analytics and marketing scripts is balanced with privacy considerations. Incident response and security policy documentation are not publicly available, indicating an area for enhancement. Overall, the site maintains a secure environment appropriate for a non-profit organization.

Recommendations

  1. Implement comprehensive 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 incident response plan accessible to users and stakeholders.
  3. Regularly audit and update third-party scripts to minimize vulnerabilities.
  4. Enhance CSRF protections on all forms to prevent cross-site request forgery.
  5. Continue to monitor and improve privacy compliance as regulations evolve.

Contact details published on the site

Addresses
Legal name
NABU Landesverband Bremen e.V.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
NABU Landesverband Bremen e.V.
Description
Der NABU Bremen ist aktiv für Mensch und Natur! Mit offenen Treffs für Naturbegeisterte, Umweltbildung, politischem und viel praktischem Engagement.
Key services
Nature conservation projects, Environmental education, Volunteer engagement, Events and workshops, Fundraising and donations
Content quality
excellent
Branding
consistent

Technology

Stack
HTML5, CSS, JavaScript, Matomo Analytics, Google Tag Manager, Klaro Cookie Consent, ReadSpeaker, Swiper.js
Frameworks
IMPERIA CMS 8.6.0
Performance
moderate
Mobile
good
Accessibility
good
SEO
good

Security

Observed score
80/100
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)

Analytics and tracking

Services
Matomo Analytics, Google Analytics
Tracking level
moderate
Privacy practices
good

Advertising

Ad networks
Google Ads
Tracking pixels
Meta-Pixel
Transparency
good

Site quality

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

Key observations

  1. Website is professionally designed and well-structured.
  2. Strong focus on environmental conservation and community involvement.
  3. Comprehensive privacy and cookie policies with consent management.
  4. Use of modern analytics and marketing tools with privacy considerations.
  5. Clear and multiple contact channels including email, phone, and physical address.
  6. No signs of malicious or suspicious activity.
  7. No critical security issues detected but security headers could be improved.
Technical notes

Notes

The website is powered by IMPERIA CMS 8.6.0, leveraging modern front-end technologies such as Swiper.js for sliders and Klaro for cookie consent management. Analytics are handled via Matomo and Google Analytics, integrated through Google Tag Manager. The site is mobile responsive with good accessibility features including skip links and ARIA labels. Performance is moderate, with deferred script loading and optimized images. The hosting provider is not explicitly identified. The technical stack is well-maintained but could benefit from enhanced security headers and performance tuning to improve loading speed further.
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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