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Security report for wetteronline.de

WetterOnline · Media · Germany

Medium risk. 6 critical or high findings in GDPR outside view and Security headers.

Security score

68/100

Risk levelMedium

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

WetterOnline is a well-established German weather information provider offering comprehensive weather forecasts, radar maps, news, and multimedia content. The website targets a general audience interested in weather updates primarily in Germany and Europe but also worldwide. The business model relies heavily on advertising and providing detailed weather data and services. Technically, the site uses modern web technologies including JavaScript frameworks, Google Tag Manager, Prebid.js for advertising, and Amazon AWS for hosting, indicating a mature digital infrastructure. Security posture is strong with HTTPS enforced and GDPR-compliant consent management, though explicit security policies and incident response information are not publicly visible. Overall, the site is professional, trustworthy, and compliant with privacy regulations.

Scanned

NIS2 and GDPR posture

GDPR outside view
45/ 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 wetteronline.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
90
Security headers
35
Email security
75
DNS health
65
Network security
100
GDPR outside view
45
Average
68

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 company holds a strong market position in the German-speaking weather media sector, leveraging multiple digital channels including social media and mobile apps. Revenue streams appear to be primarily advertising-based, supported by partnerships with major ad networks like Google and Amazon. The presence of a dedicated e-commerce shop suggests diversification. The target customer segment is broad, encompassing general consumers, travelers, and weather enthusiasts. The company demonstrates good branding consistency and content quality, supporting sustained user engagement and trust.

Security posture

The website demonstrates a solid security foundation with HTTPS and a GDPR-compliant consent management platform. No critical vulnerabilities or exposed sensitive data were detected in the HTML content. However, the absence of visible security policies, incident response contacts, or a security.txt file indicates room for improvement in transparency and readiness. Advertising scripts and trackers are managed with user consent, aligning with privacy best practices. Overall, the security posture is good but could be enhanced by publishing explicit security and incident response information.

Recommendations

  1. Publish a dedicated security policy and incident response page to improve transparency and user trust.
  2. Implement and publicly link a security.txt file to facilitate vulnerability reporting.
  3. Ensure all recommended security headers (CSP, X-Frame-Options, Referrer-Policy) are set and documented.
  4. Consider adding visible contact information for data protection officer or security team.
  5. Regularly audit third-party scripts and advertising technologies to minimize privacy and security risks.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
WetterOnline
Description
WetterOnline bietet Wettervorhersagen, Wetterberichte, Wettertrends, Regenradar, Reisewetter, Segelwetter und umfangreiche Wetterdaten für Deutschland, Europa und weltweit.
Key services
Weather forecasts, Weather radar and maps, Weather news and videos, Travel weather information, Professional weather model charts
Content quality
excellent
Branding
consistent

Technology

Stack
JavaScript, Google Tag Manager, Google Publisher Tags (GPT), Prebid.js, Amazon A9 (apstag), Privacy Management CMP, Webpack, CSS3, HTML5
Platforms
Web
Performance
moderate
Mobile
good
Accessibility
basic
SEO
good

Security

Observed score
85/100
Good practices seen
  • HTTPS enforced
  • Use of consent management platform for GDPR compliance
  • No exposed sensitive data in HTML
  • Secure cookie attributes (SameSite=Lax)

Analytics and tracking

Services
Google Tag Manager, IVW (German web analytics)
Tracking level
moderate
Privacy practices
good

Advertising

Ad networks
Google Ad Manager (GPT), Amazon A9, Prebid.js, PubMatic, Intowow
Tracking pixels
IVW (cnt.wetteronline.de)
Marketing tools
Cleverpush (push notifications)
Transparency
good

Site quality

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

Key observations

  1. Website is a professional weather information portal targeting German-speaking users.
  2. Strong use of advertising and tracking technologies with GDPR-compliant consent management.
  3. Comprehensive weather content including forecasts, radar, news, videos, and professional charts.
  4. Good SEO and social media integration.
  5. No direct contact emails or phone numbers found on the homepage HTML.
  6. No explicit security or incident response policies visible on the homepage.
  7. Use of modern JavaScript frameworks and ad tech stacks.
  8. No signs of WAF blocking or content restrictions.
Technical notes

Notes

The website is built on a modern JavaScript-based tech stack with extensive use of advertising and analytics frameworks such as Google Tag Manager, Prebid.js, and Amazon A9. Hosting is provided via Amazon AWS, as indicated by the WHOIS nameservers. The site uses Webpack for asset bundling and serves optimized images including WebP format. Performance is moderate with lazy loading and ad refresh mechanisms implemented. Mobile optimization is good with responsive CSS and viewport settings. Accessibility is basic but could be improved. SEO is supported by comprehensive meta tags, Open Graph data, and structured JSON-LD organization schema. Overall, the technical infrastructure is robust and scalable.
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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