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Security report for mittner-partner.ch

Mittner & Partner · Finance · Switzerland

High risk. 7 critical or high findings in Network security, Security headers and 1 other check.

Security score

49/100

Risk levelHigh

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

Mittner & Partner is a well-established Swiss financial services firm specializing in fiduciary services, auditing, tax consulting, and business advisory primarily serving clients in Chur, Zurich, the Eastern Switzerland region, and Liechtenstein. With over 30 years of experience, the company positions itself as a trusted partner for both corporate and private clients, emphasizing professional and competent service delivery. The website reflects a focused business model with clear service offerings and regional expertise, supported by memberships in relevant professional associations.

Scanned

NIS2 and GDPR posture

GDPR outside view
53/ 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

7 findings rated critical or high. Fix these first.

  1. Network security

    Services reachable from the internet are the first thing attackers probe. Anything open that does not need to be should be closed.

    • Critical

      Critical Service Exposed: MySQL

      Port 3306 (MySQL) is publicly accessible - MySQL - Database server

      What to do: Immediately restrict access to MySQL using firewall or VPN

      • NIS2 21(2)(e)
      • IR 2024/2690 6.7.2(f): Implementing Regulation (EU) 2024/2690, Annex point 6.7.2(f): Network security
      • NIST CM-7: NIST SP 800-53 Rev. 5 CM-7: Least Functionality
      • NIST SC-7: NIST SP 800-53 Rev. 5 SC-7: Boundary Protection

  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';…

  3. GDPR outside view

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

    • 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

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

Keep watching mittner-partner.ch

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.

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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
85
Security headers
15
Email security
70
DNS health
75
Network security
0
GDPR outside view
53
Average
50
After the cap
49

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 · found on this site
  • 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 operates in the finance sector as a small-sized entity with a strong regional footprint. Its competitive advantage lies in its long-standing experience, regulatory licensing as a revision company, and network connections in Switzerland and Liechtenstein. The business model centers on providing comprehensive fiduciary and auditing services, tax advice, and corporate consulting, targeting SMEs and private individuals. The absence of social media presence and limited digital marketing tools suggests a traditional client acquisition approach. The partnership ecosystem includes recognized Swiss and Liechtenstein professional bodies, enhancing credibility.

Security posture

The website demonstrates a moderate security posture with HTTPS presumably enabled (though SSL details are unknown), no visible security headers, and no exposed sensitive data. The use of an outdated jQuery version introduces a minor risk. There is no published security policy or incident response contact, and cookie consent mechanisms are absent, indicating gaps in privacy compliance. Tracking is minimal and limited to a single tracking pixel from a third-party service. Overall, the security maturity is adequate for a small professional services firm but could benefit from enhancements in headers, updated libraries, and privacy controls.

Recommendations

  1. Implement comprehensive security headers such as Content-Security-Policy, X-Frame-Options, and Strict-Transport-Security to improve defense against common web attacks.
  2. Introduce a cookie consent banner and update privacy policies to explicitly address GDPR compliance and user data handling.
  3. Upgrade JavaScript libraries, particularly jQuery, to the latest secure versions to mitigate known vulnerabilities.
  4. Publish a clear security policy and provide dedicated incident response contact channels to enhance trust and preparedness.
  5. Consider expanding digital marketing and analytics tools with privacy-respecting configurations to improve user insights and business growth.

Contact details published on the site

Addresses
Legal name
Mittner & Partner
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
Mittner & Partner
Description
Mittner + Partner ist ein erfahrenes Treuhand- und Wirtschaftsprüfungsbüro mit über 30 Jahren Erfahrung, das Unternehmen und Privatkunden im Grossraum Chur, Zürich, Ostschweiz und Liechtenstein fachlich kompetent in Wirtschaftsprüfung, Buchführung, Steuerberatung und Unternehmensberatung betreut.
Key services
Wirtschaftsprüfung, Buchführung, Steuerberatung, Unternehmensberatung
Content quality
good
Branding
consistent

Technology

Stack
HTML5, CSS, JavaScript, jQuery 1.9.1
Performance
moderate
Mobile
good
Accessibility
basic
SEO
good

Security

Observed score
65/100
Good practices seen
  • No visible exposed sensitive data
  • No vulnerable libraries detected

Analytics and tracking

Services
tracker.alpen-web.ch
Tracking level
minimal
Privacy practices
poor

Advertising

Tracking pixels
tracker.alpen-web.ch
Transparency
poor

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. Content is professionally presented in German targeting Swiss and Liechtenstein clients.
  3. Clear contact information and business address provided.
  4. No explicit privacy or cookie consent mechanisms detected.
  5. Use of outdated jQuery version may pose minor security risk.
  6. No visible security headers detected; potential area for improvement.
  7. Tracking pixel present but minimal user tracking observed.
  8. No social media links found on the site.
  9. Business is a small, specialized financial services provider with strong regional presence.
Technical notes

Notes

The website is built using standard HTML5, CSS, and JavaScript with jQuery 1.9.1, indicating a somewhat dated but functional technology stack. No modern frameworks or CMS platforms are detected, suggesting a custom or static site approach. Performance is moderate with good mobile optimization and basic accessibility features. SEO is supported by proper meta tags and Open Graph data. Hosting provider and SSL configuration details are not available, limiting deeper infrastructure analysis. The site uses a third-party tracking pixel but lacks advanced analytics or marketing integrations.
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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