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Security report for testdaf.de

g.a.s.t. · Education · Germany

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

Security score

60/100

Risk levelMedium

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

The website www.testdaf.de represents the official platform for the TestDaF examination, a key German language proficiency test for international students and researchers aiming to study or conduct research at German universities. Operated by the organization g.a.s.t., the site offers comprehensive information about the test formats (digital and paper-based), test centers worldwide, registration, and preparation resources. The platform also supports educators and test centers with training and licensing services. The website is well-positioned as a trusted educational service with recognized certifications such as the ALTE Q-Mark, indicating high quality and reliability in language testing. Technically, the site is built on TYPO3 CMS with modern web technologies, ensuring good performance, mobile responsiveness, and accessibility. Security posture is solid with HTTPS enforced and GDPR-compliant cookie consent mechanisms, although some advanced security headers and explicit security policies are not publicly disclosed. Overall, the site demonstrates a professional, trustworthy, and user-friendly digital presence aligned with its educational mission.

Scanned

NIS2 and GDPR posture

GDPR outside view
43/ 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

6 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

  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 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';…

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Keep watching testdaf.de

This scan found 27 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
67
Security headers
25
Email security
60
DNS health
65
Network security
100
GDPR outside view
43
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 testdaf.de, from OffSeq Breach.

Total records
2,039
Employees
0
Customers
2,039
Third parties
0
Weak passwords
11%

7 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 testdaf.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

TestDaF is a specialized educational testing service targeting international students and academic professionals. Its market position is strong within the German higher education ecosystem, being the officially recognized German language test accepted by all German universities. The business model is non-profit and service-oriented, focusing on test administration, licensing of test centers, and educational support. The organization maintains partnerships with g.a.s.t. and related educational platforms, enhancing its ecosystem. The website reflects a mature digital strategy with clear navigation, multilingual support, and integration with external portals for participants and test centers. Growth indicators include expanding digital test offerings and active research and development. The presence of certifications and transparent contact information further strengthens business credibility.

Security posture

The website employs HTTPS and integrates a cookie consent mechanism compliant with GDPR, reflecting a good baseline for data protection and user privacy. No critical vulnerabilities or exposed sensitive data were detected in the HTML content. However, the absence of explicit security headers (e.g., Content Security Policy, HSTS) and a public security policy or incident response contact reduces the overall security maturity. There is no evidence of a vulnerability disclosure program or security.txt file. The use of reputable third-party libraries and frameworks reduces risk, but continuous monitoring and enhancement of security headers and policies are recommended to mitigate emerging threats and comply with best practices.

Recommendations

  1. Implement and enforce HTTP security headers such as Content Security Policy (CSP), Strict-Transport-Security (HSTS), X-Frame-Options, and X-XSS-Protection to enhance protection against common web attacks.
  2. Publish a dedicated security policy page and provide clear incident response contact channels (e.g., security@ or abuse@ email addresses) to improve transparency and readiness.
  3. Establish a vulnerability disclosure program and host a security.txt file to facilitate responsible reporting of security issues.
  4. Regularly audit third-party libraries and dependencies to ensure no vulnerable versions are in use.
  5. Enhance user trust by providing more detailed information about data retention policies and security certifications.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
g.a.s.t.
Description
Der TestDaF ist die wichtigste deutsche Sprachprüfung für internationale Studienbewerber*innen auf Ihrem Weg an eine deutsche Hochschule. Das TestDaF-Zeugnis ist unbegrenzt gültig und wird von allen Hochschulen in Deutschland anerkannt. Es wird an über 500 Testzentren in 100 Ländern angeboten.
Key services
TestDaF examination (digital and paper-based), Test center licensing and support, Information and preparation materials, Teacher training and freelance assessor services, Research and development in language testing
Content quality
excellent
Branding
consistent

Technology

Stack
TYPO3 CMS, jQuery, Bootstrap 4, FontAwesome, Swiper.js, mmenu.js, Google Tag Manager
Frameworks
TYPO3 CMS
Performance
moderate
Mobile
good
Accessibility
good
SEO
good

Security

Observed score
85/100
Good practices seen
  • HTTPS enforced (implied by canonical URL https://)
  • Cookie consent banner with GDPR compliance
  • No exposed sensitive data in HTML
  • Use of secure external scripts

Analytics and tracking

Services
Google Tag Manager
Tracking level
moderate
Privacy practices
good

Advertising

Transparency
basic

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, well-structured, and professionally presented.
  3. Strong focus on education and language testing services.
  4. Good GDPR and cookie compliance with clear user consent.
  5. Use of modern web technologies and CMS TYPO3.
  6. Presence of official certifications and trust signals.
  7. Contact information is clearly provided with multiple channels.
  8. No security policy or incident response contact publicly available.
  9. No vulnerability disclosure or security.txt found.
Technical notes

Notes

The website is built on TYPO3 CMS, a robust and widely used open-source content management system, combined with modern front-end technologies including Bootstrap 4, jQuery, FontAwesome, and Swiper.js for interactive elements. Google Tag Manager is used for analytics and marketing tracking. The site is mobile-optimized and accessible, with a clear navigation structure and fast loading times. The technical stack is mature and well-maintained, supporting a professional user experience. Opportunities exist to improve technical security configurations and to document hosting and infrastructure details for enhanced transparency.
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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