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Security report for telc.net

telc · Education · Germany

Medium risk. 2 critical or high findings in SSL/TLS.

Security score

69/100

Risk levelMedium

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

telc.net is a professional website dedicated to language examinations, certifications, and learning materials primarily targeting language learners, educational institutions, and professionals. The site positions itself as a reputable provider of language certificates across multiple proficiency levels (A1 to C2), serving a broad audience in Germany and internationally. The business model centers on delivering language testing and training services, supported by a medium-sized organizational structure. The website content is well-structured, professionally designed, and consistent with the brand identity, reflecting a strong market presence in the education sector. Technically, the website leverages TYPO3 CMS with Bootstrap and FontAwesome for frontend design, integrating advanced analytics and marketing tools such as Matomo, Google Analytics, Google Tag Manager, and Cookiebot for GDPR-compliant cookie management. The site demonstrates good mobile optimization, accessibility, and SEO practices, although hosting provider details are not explicitly disclosed. Performance is moderate, with room for optimization. From a security perspective, the site enforces HTTPS and employs essential security cookies like XSRF-TOKEN to prevent cross-site request forgery. Cookie consent mechanisms are robust and GDPR compliant. However, explicit security headers are not detected, and no published security or incident response policies are found, indicating areas for improvement. The WHOIS data is incomplete or privacy protected, which slightly reduces trust but is not uncommon for organizations in this sector. Overall, telc.net presents a trustworthy and professional online presence with a solid technical foundation and compliance posture. Strategic enhancements in security transparency and contact information availability would further strengthen its risk profile and user trust.

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

2 findings rated critical or high. Fix these first.

  1. 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
    • High

      Weak SSL Key Length

      SSL certificate uses 256-bit key, which is considered weak

      What to do: Use at least 2048-bit RSA or 256-bit ECC key

      • CWE-326
      • OWASP A04:2025
      • Mozilla TLS: Mozilla Server Side TLS 6.0 intermediate: rsa_key_size 2048

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

Keep watching telc.net

This scan found 18 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
52
Security headers
85
Email security
75
DNS health
80
Network security
40
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

Technical appendix

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

Business context

Business profile

telc.net operates in the education sector, focusing on language certification and training services. It holds a strong market position as a recognized provider of language exams and certificates, catering to learners, professionals, and institutions. The business model likely includes revenue from exam fees, training materials, and certification services. The website's integration with multiple subdomains for training and community engagement suggests a diversified service ecosystem. The use of advanced analytics and marketing tools indicates a data-driven approach to customer engagement and growth. The absence of explicit contact details and security policies suggests a potential area for operational transparency improvement. Partnerships appear focused on related educational services, enhancing the overall value proposition.

Security posture

The website demonstrates a mature security posture with mandatory HTTPS encryption and essential security cookies to protect user sessions and prevent CSRF attacks. The implementation of a comprehensive cookie consent mechanism aligns with GDPR requirements, reflecting good privacy practices. However, the absence of explicit security headers such as Content-Security-Policy, X-Content-Type-Options, and X-Frame-Options is a notable gap that could expose the site to certain web-based attacks. No vulnerabilities or exposed sensitive data were detected in the provided content. The lack of published security policies or incident response contacts limits transparency and preparedness perception. Overall, the security posture is solid but could benefit from enhanced header configurations and published security documentation.

Recommendations

  1. Implement and enforce security headers including Content-Security-Policy, X-Content-Type-Options, and X-Frame-Options to mitigate common web vulnerabilities.
  2. Publish a clear security policy and incident response contact information to improve transparency and user trust.
  3. Consider adding a vulnerability disclosure program or security.txt file to facilitate responsible reporting of security issues.
  4. Enhance contact information availability on the website to support user and partner communications.
  5. Optimize website performance and accessibility further to improve user experience and SEO rankings.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
telc
Description
Sprachprüfungen, Lernmaterialen und Trainings. Für Beruf, Integration und Hochschulen. Zertifikate von A1 bis C2 - jetzt informieren.
Key services
language examinations, learning materials, training programs, certificates from A1 to C2 levels
Content quality
good
Branding
consistent

Technology

Stack
TYPO3 CMS, Bootstrap, FontAwesome, Matomo Analytics, Google Tag Manager, Cookiebot Consent Management
Frameworks
TYPO3 CMS, Bootstrap
Performance
moderate
Mobile
good
Accessibility
good
SEO
good

Security

Observed score
85/100
Good practices seen
  • HTTPS enforced
  • Cookie consent with granular controls
  • Cross-site request forgery protection cookie (XSRF-TOKEN)

Analytics and tracking

Services
Matomo, Google Analytics
Tracking level
extensive
Privacy practices
good

Advertising

Ad networks
Google, YouTube
Tracking pixels
Cookiebot, Matomo
Marketing tools
Cookiebot
Transparency
good

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. Uses modern CMS TYPO3 with Bootstrap and FontAwesome
  3. Complies with GDPR cookie consent requirements
  4. Extensive use of Google and YouTube marketing and analytics tools
  5. No visible contact emails or phone numbers on main page
  6. No explicit security or incident response policies published
  7. WHOIS data unavailable, possibly privacy protected or unregistered domain
Technical notes

Notes

The website is built on TYPO3 CMS, a robust and scalable content management system, combined with Bootstrap for responsive design and FontAwesome for iconography. It integrates Matomo and Google Analytics for comprehensive visitor tracking and marketing optimization, alongside Cookiebot for GDPR-compliant cookie management. The technical stack is modern and well-maintained, supporting good mobile responsiveness and accessibility. Performance is moderate, with potential for improvements in loading speed and resource optimization. The absence of detailed hosting information limits full infrastructure assessment. Overall, the technical implementation supports the business goals effectively but could benefit from enhanced security configurations and performance tuning.
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. 64/100Medium29 findingsView report
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