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Security report for onvista.de

onvista · Finance · Germany

Medium risk. 5 critical or high findings in GDPR outside view, Security headers and 1 other check.

Security score

65/100

Risk levelMedium

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

Onvista is a well-established German financial portal providing comprehensive stock market data, news, and investment tools. It targets retail investors and financial market participants primarily in Germany. The platform offers real-time and delayed market data, portfolio management, broker comparison, and premium subscription content. Technically, the site uses modern frameworks such as React and Next.js, hosted likely on AWS infrastructure with CDN and security services. The website is fast, mobile-optimized, and well-structured, providing an excellent user experience. Security posture is strong with HTTPS and modern best practices, though explicit security policies and vulnerability disclosures are absent. Privacy compliance is limited due to missing visible privacy and cookie policies. Overall, the site is professional, trustworthy, and safe for general audiences.

Scanned

NIS2 and GDPR posture

GDPR outside view
33/ 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

5 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

    • 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

  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 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';…

  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 onvista.de

This scan found 25 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
72
Security headers
45
Email security
75
DNS health
65
Network security
100
GDPR outside view
33
Average
65

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

Onvista holds a strong market position in the German financial media sector, leveraging a freemium business model with premium subscriptions and brokerage partnerships. Its key services include market data, news, portfolio tools, and broker integration. The target audience is retail investors and financial enthusiasts in Germany. The company ecosystem includes related domains for trading, support, and community engagement. The platform demonstrates digital maturity with modern technology adoption and a clear focus on user engagement and monetization through premium content.

Security posture

The website exhibits a mature security posture with enforced HTTPS, use of security-conscious frameworks, and no visible exposure of sensitive data. However, it lacks published security policies, incident response contacts, and vulnerability disclosure mechanisms, which are important for transparency and trust. Cookie consent mechanisms and privacy policy visibility are also missing, indicating gaps in GDPR compliance. No known vulnerabilities or suspicious patterns were detected in the provided content. The security score is good but can be improved by publishing formal policies and enhancing privacy compliance.

Recommendations

  1. Publish a clear and accessible privacy policy and cookie policy to improve GDPR compliance.
  2. Implement and display a cookie consent mechanism to inform users and obtain consent.
  3. Publish a security policy and incident response contact information to enhance transparency.
  4. Provide a vulnerability disclosure policy or security.txt file to encourage responsible reporting.
  5. Add or verify security headers such as Content-Security-Policy, X-Frame-Options, and X-Content-Type-Options.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
onvista
Description
Informiere dich über Börsennews & Kurse, teste Strategien mit dem Musterdepot, triff fundierte Entscheidungen, handle über mehrere Broker, analysiere deine Depots mit dem Portfolio-Tool.
Key services
Real-time and delayed stock market data, Financial news and analyses, Portfolio and depot management tools, Broker comparison and trading services, Premium content subscription
Content quality
excellent
Branding
consistent

Technology

Stack
React, Next.js, Cloudflare (likely for CDN and security), AWS DNS (Amazon Route 53), Google Tag Manager, Privacy Management CDN
Frameworks
Next.js, React
Platforms
Web
Performance
fast
Mobile
excellent
Accessibility
good
SEO
good

Security

Observed score
90/100
Good practices seen
  • HTTPS enforced
  • Use of modern JavaScript frameworks
  • No exposed sensitive data in HTML
  • Use of Google Tag Manager with async loading

Analytics and tracking

Services
Google Tag Manager
Tracking level
moderate
Privacy practices
basic

Advertising

Ad networks
bf-tools.net
Transparency
basic

Site quality

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

Key observations

  1. Website is a professional German financial portal with extensive market data and news.
  2. No explicit privacy or cookie policies found in the provided HTML content.
  3. No contact emails or phone numbers explicitly found in the visible content.
  4. Use of modern web technologies and frameworks.
  5. No security or incident response policies published.
  6. No vulnerability disclosure or security.txt found.
  7. Content is safe and suitable for general audiences.
  8. Advertising and tracking are present but limited to known services.
  9. WHOIS data indicates professional domain management.
Technical notes

Notes

The website is built on a modern React and Next.js stack, ensuring server-side rendering and good SEO. Hosting appears to be on AWS with DNS managed by Amazon Route 53. The site uses Google Tag Manager for analytics and tracking, and a privacy management CDN is present. Performance is optimized with preloading fonts and images, and mobile responsiveness is excellent. Accessibility features are present but could be further enhanced. The technical infrastructure is robust with minimal technical debt visible. Opportunities exist to improve security headers and formalize privacy and security documentation.
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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