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Security report for osnatel.de

osnatel · Telecommunications · Germany

Medium risk. 3 critical or high findings in Security headers, GDPR outside view and 1 other check.

Security score

73/100

Risk levelMedium

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

osnatel is a regional telecommunications and energy service provider in Germany, offering internet (DSL and fiber), mobile tariffs with devices, and energy solutions under the umbrella of its parent company EWE. The website targets both private and business customers with a clear, professional presentation of services and easy navigation. Technically, the site uses modern JavaScript frameworks, a consent management platform for GDPR compliance, and integrates analytics tools such as Matomo and Google Analytics. Security posture is strong with HTTPS enforced and no visible vulnerabilities, though explicit security policies and incident response contacts are not published. Overall, the site demonstrates a mature digital presence with good privacy and security practices, supporting a trustworthy user experience.

Scanned

NIS2 and GDPR posture

GDPR outside view
68/ 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

3 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 X-Frame-Options header

      Prevents clickjacking attacks

      What to do: Add "X-Frame-Options: DENY" or "X-Frame-Options: SAMEORIGIN"

  2. GDPR outside view

    These are the privacy signals visitors and data protection authorities look for under GDPR.

    • 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

  3. 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 osnatel.de

This scan found 22 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

€25per month

  • 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
65
Email security
60
DNS health
65
Network security
100
GDPR outside view
68
Average
73

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

osnatel operates as a medium-sized essential entity in the telecommunications and energy sectors, leveraging its parent company EWE's infrastructure and brand. Its business model focuses on bundled telecommunications and energy services, targeting regional private and business customers. The company maintains a referral program and active social media presence, indicating engagement strategies. The website content and linked domains reflect a consistent and integrated ecosystem with EWE, enhancing market credibility and operational synergy.

Security posture

The website enforces HTTPS and uses consent management to comply with GDPR, reflecting a solid baseline security posture. Tracking scripts are loaded asynchronously to minimize performance impact. However, the absence of explicit security policies, incident response contacts, and a security.txt file suggests room for improvement in transparency and vulnerability management. No exposed sensitive data or vulnerable libraries were detected in the HTML content. Security headers are partially implied but not explicitly confirmed, recommending further header hardening.

Recommendations

  1. Publish a dedicated security policy page including incident response and abuse contacts.
  2. Implement and verify security headers such as X-Frame-Options, Referrer-Policy, and Content-Security-Policy explicitly.
  3. Add a security.txt file at the root domain to facilitate vulnerability disclosures.
  4. Regularly audit third-party scripts and tracking tools for security and privacy compliance.
  5. Enhance contact information by including verified company emails and phone numbers for customer and security inquiries.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
osnatel
Description
osnatel offers DSL and fiber optic internet, mobile tariffs, smartphones, tablets, and additional services such as ZuhauseTV and energy solutions. It serves private and business customers primarily in its regional area.
Key services
Internet (DSL and fiber), Mobile tariffs and devices, Energy supply (electricity, gas, heating), Additional services (ZuhauseTV, PC security, cloud/webmail), Customer service and support
Content quality
good
Branding
consistent

Technology

Stack
Matomo Tag Manager, Jentis, Swiper.js, Consentmanager.net, JavaScript ES6 modules
Performance
fast
Mobile
excellent
Accessibility
good
SEO
good

Security

Observed score
85/100
Good practices seen
  • HTTPS enforced
  • Consent management for cookies
  • No exposed sensitive data in HTML
  • Use of asynchronous loading for tracking scripts

Analytics and tracking

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

Advertising

Ad networks
Google Ads
Tracking pixels
Matomo, Jentis
Marketing tools
Consentmanager.net
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. Strong integration with parent company EWE visible in links and privacy policy.
  3. Comprehensive consent management implemented for GDPR compliance.
  4. Use of modern JavaScript frameworks and tracking tools.
  5. Clear navigation structure with dedicated sections for private and business customers.
  6. No exposed sensitive data or security vulnerabilities detected in the HTML content.
  7. Social media presence on Facebook and Instagram.
  8. CO2-neutral website badge indicates environmental awareness.
Technical notes

Notes

The website is built on the Pimcore CMS platform and uses modern JavaScript libraries including Swiper.js for UI components and Matomo for analytics. Consentmanager.net is integrated for cookie consent management, ensuring GDPR compliance. The site is mobile-optimized with responsive design and fast loading times. Hosting appears to be managed by or affiliated with EWE, providing stable infrastructure. The technical implementation is modern and well-structured, though explicit frameworks beyond CMS and JS libraries are not detailed. SEO and accessibility are well addressed with proper meta tags and ARIA roles.
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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