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Security report for opensenselab.de

openSenseLab gGmbH · Education · Germany

Medium risk. 6 critical or high findings in Security headers, GDPR outside view and 1 other check.

Security score

60/100

Risk levelMedium

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

openSenseLab gGmbH is a German non-profit organization focused on promoting free education, digital literacy, and environmental and climate protection. Founded in 2021, it operates various educational projects such as hackathons, digital education hubs, and open educational badges aimed primarily at youth and educational communities. The organization positions itself as a niche player in the education and environmental sectors, emphasizing free access to knowledge and community engagement. Technically, the website is built using the Hugo static site generator, leveraging modern JavaScript libraries for enhanced user experience and search functionality. The site is mobile-optimized and accessible, with good SEO practices in place. Security-wise, the site uses HTTPS and Google reCAPTCHA v3 for form protection but lacks DNSSEC and some recommended security headers. Privacy compliance is supported by a clear privacy policy and GDPR adherence, though no explicit cookie consent mechanism was detected. Overall, the website is professional, trustworthy, and well-aligned with its non-profit mission.

Scanned

NIS2 and GDPR posture

GDPR outside view
53/ 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

6 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. 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

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

Keep watching opensenselab.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
85
Security headers
15
Email security
55
DNS health
50
Network security
100
GDPR outside view
53
Average
60

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 opensenselab.de, from OffSeq Breach.

No leaked records found

Breach holds no records for opensenselab.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 operates in the education and environmental non-profit sectors, targeting children, youth, and digital education enthusiasts. Its business model is non-commercial, relying on grants and donations, as evidenced by the REACT-EU funding mention and donation calls. The website highlights multiple projects that foster digital skills and environmental awareness, positioning openSenseLab as a community-driven educational hub. The presence of social media channels and a newsletter indicates active engagement with its audience. The organization maintains transparency with clear contact details and legal information, supporting credibility and trust. Growth potential lies in expanding educational offerings and partnerships within the digital education and environmental advocacy ecosystems.

Security posture

The website demonstrates a moderate security maturity level with HTTPS enforced and use of Google reCAPTCHA v3 to protect forms from abuse. However, the absence of DNSSEC and security headers such as Content-Security-Policy and X-Frame-Options represents areas for improvement. No incident response or vulnerability disclosure policies are published, which could limit preparedness for security events. The site does not expose sensitive data and uses reputable third-party services for newsletter management and captcha. Overall, the security posture is adequate for a small non-profit but would benefit from enhanced DNS security and formalized security policies to align with best practices and compliance frameworks.

Recommendations

  1. Enable DNSSEC on the domain to improve DNS integrity and prevent spoofing.
  2. Implement security headers including Content-Security-Policy, X-Frame-Options, and X-Content-Type-Options to mitigate common web vulnerabilities.
  3. Publish a formal security policy and incident response contact information to improve transparency and readiness.
  4. Add a cookie consent banner or mechanism to comply fully with GDPR cookie requirements.
  5. Consider establishing a vulnerability disclosure program or security.txt file to encourage responsible reporting.

Contact details published on the site

Addresses
Legal name
openSenseLab gGmbH
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
openSenseLab gGmbH
Description
Die openSenseLab gGmbH ist eine gemeinnüztige Gesellschaft mit Beschränkter Haftung mit dem Ziel der Förderung von freier Bildung, Wissenschaft, Umwelt- und Klimaschutz und des bürgerschaftlichen Engagements.
Key services
Digital education projects, Hackathons and youth programs, Open educational badges, Community engagement in climate and environmental protection
Content quality
good
Branding
consistent

Technology

Stack
Hugo static site generator, Google reCAPTCHA v3, Medium Zoom JS library, Lunr.js for search, Brevo (Sendinblue) for newsletter
Performance
moderate
Mobile
good
Accessibility
good
SEO
good

Security

Observed score
70/100
Good practices seen
  • HTTPS enforced
  • Use of Google reCAPTCHA v3 on forms
  • No exposed sensitive data in HTML

Analytics and tracking

Tracking level
minimal
Privacy practices
good

Advertising

Tracking pixels
Google reCAPTCHA
Marketing tools
Brevo (Sendinblue) newsletter platform
Transparency
basic

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 challenges.
  2. Content is in German and focused on education, environment, and free knowledge.
  3. Clear contact information and multiple project descriptions enhance trust.
  4. Use of modern web technologies and static site generator Hugo.
  5. No explicit privacy or cookie consent banner detected, but privacy policy is present.
  6. Security posture is good but can be improved with DNSSEC and security headers.
  7. No adult or questionable content detected; safe for general audiences.
Technical notes

Notes

The website is built on the Hugo static site generator, which provides a fast and secure foundation. It uses modern JavaScript libraries such as Medium Zoom for image interaction and Lunr.js for client-side search functionality. The integration of Google reCAPTCHA v3 enhances form security. The newsletter is managed via Brevo (Sendinblue), indicating use of professional marketing tools. Performance is moderate with preloading of fonts and scripts, and the site is mobile-optimized with responsive design. No major technical debt or outdated technologies were detected. Opportunities exist to improve DNS security and add security headers to reduce risk exposure.
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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