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Security report for breitbandmessung.de

Bundesnetzagentur · Government · Germany

Low risk. 3 critical or high findings in Security headers and SSL/TLS.

Security score

78/100

Risk levelLow

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

Breitbandmessung.de is the official broadband measurement platform operated by the German Bundesnetzagentur, providing consumers and stakeholders with tools to measure internet speed and mobile network availability. The website offers multiple services including a desktop app, browser-based speed tests, and a mobile app for detecting mobile network coverage gaps (Funkloch-App). It also publishes annual reports and interactive visualizations to inform the public about broadband performance across Germany. Technically, the website employs modern web standards with responsive design, SVG icons, and progressive web app features. It uses Bootstrap for layout and custom fonts for branding consistency. The site is optimized for mobile devices and accessibility, with proper meta tags and structured navigation. External links to official app stores enhance user engagement. From a security perspective, the site enforces HTTPS and employs cookie consent mechanisms aligned with GDPR requirements. While no explicit security headers or incident response contacts are published, no vulnerabilities or exposed sensitive data were detected. Privacy compliance is strong, with anonymized user tracking and clear cookie categorization. Overall, Breitbandmessung.de demonstrates a high level of professionalism, trustworthiness, and compliance suitable for a government service. Recommendations include enhancing security header implementation, publishing a security.txt file, and providing explicit incident response information to further strengthen security posture and transparency.

Scanned

NIS2 and GDPR posture

GDPR outside view
95/ 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

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 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"

  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 breitbandmessung.de

This scan found 19 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
77
Security headers
40
Email security
85
DNS health
70
Network security
100
GDPR outside view
95
Average
78

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

The Bundesnetzagentur operates Breitbandmessung.de as a public service to empower consumers with transparent broadband performance data. Its market position is authoritative within Germany's telecommunications sector, serving as a trusted source for internet speed verification and mobile network coverage assessment. The business model is non-commercial, focusing on regulatory compliance and consumer protection. Key services include downloadable measurement apps, browser tests, and comprehensive reporting. The platform targets German internet users, regulators, and policymakers. The absence of commercial advertising and affiliate programs underscores its public service nature. The website's consistent branding and regular news updates indicate active maintenance and stakeholder engagement.

Security posture

The website exhibits a mature security posture with mandatory HTTPS usage and a robust cookie consent framework supporting GDPR compliance. No critical vulnerabilities or exposed sensitive information were found. However, the absence of HTTP security headers such as Content Security Policy (CSP), HSTS, and X-Frame-Options represents an area for improvement. Incident response and vulnerability disclosure mechanisms are not publicly documented, which could hinder rapid mitigation of security issues. The anonymized user tracking approach respects user privacy while enabling statistical analysis. Overall, the security maturity aligns with expectations for a government-operated informational platform but could benefit from enhanced transparency and technical controls.

Recommendations

  1. Implement comprehensive HTTP security headers including CSP, HSTS, and X-Frame-Options to mitigate common web attacks.
  2. Publish a security.txt file to provide clear vulnerability disclosure and incident response contact information.
  3. Add explicit security policy documentation accessible from the website to improve transparency and user trust.
  4. Enhance incident response readiness by providing dedicated security contact channels such as security@ or abuse@ email addresses.
  5. Regularly audit third-party scripts and dependencies to ensure no vulnerable libraries are included.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
Bundesnetzagentur
Description
Die Breitbandmessung der Bundesnetzagentur ermöglicht es Nutzern, die tatsächliche Datenübertragungsrate ihres Internetzugangs zu ermitteln und mit der vertraglich vereinbarten Leistung zu vergleichen. Zusätzlich bietet die Webseite mobile Messungen via Funkloch-App an und stellt Jahresberichte, interaktive Grafiken sowie Kartenansichten für Festnetz und Mobilfunk bereit.
Key services
Desktop-App für Breitbandmessung, Browserbasierte Breitbandmessung, Mobile Funkloch-App, Jahresberichte und interaktive Grafiken, Kartenansichten für Festnetz und Mobilfunk
Content quality
excellent
Branding
consistent

Technology

Stack
HTML5, CSS3, JavaScript, SVG icons, Bootstrap (conditional IE styles), Custom fonts (woff2), Manifest for PWA
Frameworks
Bootstrap
Platforms
Web, Desktop app, Mobile apps (iOS App Store, Google Play)
Performance
moderate
Mobile
good
Accessibility
good
SEO
good

Security

Observed score
85/100
Good practices seen
  • HTTPS enforced (implied by https URL)
  • No exposed sensitive data in HTML
  • Cookie consent banner with detailed cookie categories
  • Use of randomized anonymized IDs for user tracking

Analytics and tracking

Tracking level
minimal
Privacy practices
good

Advertising

Transparency
poor

Site quality

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

Key observations

  1. Official German government broadband measurement service
  2. Comprehensive privacy and cookie policies with consent mechanism
  3. No direct contact emails or phone numbers found on homepage
  4. No explicit security or incident response policies published
  5. Modern, accessible, and mobile-optimized website design
  6. No advertising or third-party tracking detected
  7. Links to official app stores for mobile and desktop apps
  8. WHOIS data consistent with official entity and domain usage
Technical notes

Notes

The website is built using standard web technologies including HTML5, CSS3, JavaScript, and Bootstrap framework, ensuring compatibility and responsiveness across devices. SVG icons and custom web fonts contribute to a consistent and professional visual identity. The presence of a manifest file indicates support for progressive web app features. Performance is moderate, with preloading and prefetching optimizations for fonts and images. Accessibility considerations are evident through ARIA roles and labels. No CMS or hosting provider details were detected from the HTML content. The site lacks advanced security headers but otherwise follows good practices for privacy and user experience. Opportunities exist to modernize security configurations and enhance incident response capabilities.
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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