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Security report for seitzgremke.de

SEITZ GREMKE Steuerberatungsgesellschaft · Finance · Germany

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

Security score

64/100

Risk levelMedium

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

SEITZ GREMKE Steuerberatungsgesellschaft is a medium-sized tax consultancy firm based in Hannover, Germany, with a team of approximately 30 professionals. The company recently merged with Steuer-Online24, expanding its service offerings and market reach. Their business model focuses on providing comprehensive tax consulting and advisory services with a strong emphasis on digital solutions. The website reflects a professional and consistent brand image, targeting businesses and individuals seeking expert tax advice. Technically, the site is built on WordPress with modern plugins such as Yoast SEO and Borlabs Cookie, ensuring good SEO and privacy compliance. The site is mobile-optimized and performs moderately well. Security-wise, the website enforces HTTPS, uses cookie consent mechanisms, and avoids exposing sensitive data, though it lacks published formal security policies or incident response contacts. Overall, the site demonstrates a high level of professionalism and trustworthiness with no signs of blocking or WAF interference.

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

5 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"

    • 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';…

  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 seitzgremke.de

This scan found 26 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

Email alerts on material changes and an exportable JSON history of every change.

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Full report

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Prices incl. 21% VAT. Secure checkout by Mollie; sold by SEQ SIA, Latvia.

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
15
Email security
70
DNS health
60
Network security
100
GDPR outside view
68
Average
64

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 positions itself as a trusted regional tax consultancy with a solid client base and a growing digital presence. Their recent fusion with Steuer-Online24 indicates strategic growth and diversification. The business targets German-speaking clients, primarily in the finance sector, offering tailored tax advisory services. Their marketing strategy includes social media engagement on Instagram, LinkedIn, and Facebook, and a dedicated client portal. The presence of legal disclosures and GDPR-compliant cookie management reflects a mature approach to compliance. The company appears well-established with clear registration and VAT information, enhancing credibility. Partnerships with local sports clubs suggest community engagement and brand strengthening.

Security posture

The website exhibits a good security posture with HTTPS enforced and no visible security vulnerabilities or exposed sensitive data. The use of nonce tokens in AJAX calls and cookie consent mechanisms aligns with best practices. However, the absence of explicit security policies, incident response contacts, and advanced security headers like Content-Security-Policy or X-Frame-Options indicates room for improvement. No vulnerability disclosure or security.txt files were found. Overall, the security maturity is adequate for the business type but could be enhanced to improve trust and incident readiness.

Recommendations

  1. Publish a formal security policy and incident response plan accessible on the website.
  2. Add security headers such as Content-Security-Policy, X-Frame-Options, and Strict-Transport-Security.
  3. Implement and publicize a vulnerability disclosure program or security.txt file.
  4. Regularly audit third-party scripts and plugins for vulnerabilities and update them promptly.
  5. Enhance accessibility features to improve compliance and user experience.

Contact details published on the site

Addresses
Legal name
SEITZ GREMKE Steuerberatungsgesellschaft
VAT number
DE275235167
Registration number
Partnerschaftsregister Nr.: 200 421 PartG mbB
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
SEITZ GREMKE Steuerberatungsgesellschaft
Description
Mit unserem knapp 30-köpfigen Team in Hannover sind wir für Sie da.
Key services
Tax consulting, Advisory services, Digital tax solutions
Content quality
excellent
Branding
consistent

Technology

Stack
WordPress, Yoast SEO plugin, jQuery, Borlabs Cookie plugin, Slick Slider
Platforms
WordPress
Performance
moderate
Mobile
good
Accessibility
basic
SEO
good

Security

Observed score
85/100
Good practices seen
  • HTTPS enforced
  • Cookie consent mechanism implemented
  • No exposed sensitive data in HTML
  • Use of nonce for AJAX calls

Analytics and tracking

Tracking level
minimal
Privacy practices
good

Advertising

Marketing tools
Yoast SEO
Transparency
basic

Site quality

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

Key observations

  1. Website is fully accessible with no blocking or WAF challenges.
  2. Strong compliance with GDPR via cookie consent and privacy policy.
  3. Clear and consistent branding and business information.
  4. No visible security vulnerabilities or exposed sensitive data.
  5. Use of modern web technologies and SEO best practices.
  6. Social media presence on Instagram, LinkedIn, Facebook.
  7. No incident response or security policy publicly disclosed.
Technical notes

Notes

The website is built on WordPress, leveraging popular plugins like Yoast SEO for search engine optimization and Borlabs Cookie for GDPR-compliant cookie management. The front-end uses jQuery and Slick Slider for interactive elements. The site is mobile responsive with good navigation clarity and consistent branding. Performance is moderate, with CSS and JS assets optimized via Autoptimize. No direct hosting provider information is available from the HTML. The technical stack is modern and well-maintained, though accessibility could be improved. The site avoids heavy tracking or analytics, aligning with privacy best practices.
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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