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Security report for datev.de

DATEV eG · Finance · Germany

Low risk. 1 critical or high finding in SSL/TLS.

Security score

88/100

Risk levelLow

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

DATEV eG is a leading enterprise-level provider specializing in software, services, and knowledge for tax consulting, auditing, legal advice, companies, and the public sector in Germany. The website reflects a professional and comprehensive digital presence targeting professionals in finance and government sectors. The technical infrastructure leverages modern JavaScript libraries such as jQuery and Slick Carousel, alongside a robust cookie consent mechanism powered by OneTrust, indicating a mature approach to privacy and user experience. Security posture is strong with HTTPS enforced and no visible vulnerabilities, although explicit security headers and incident response information are not evident in the provided content. Overall, the website demonstrates high professionalism, good technical implementation, and compliance with privacy regulations, making it a trustworthy platform for its target audience.

Scanned

This is an earlier scan of datev.de. View the latest report

NIS2 and GDPR posture

GDPR outside view
88/ 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

1 finding rated critical or high. Fix these first.

  1. 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 datev.de

This scan found 11 issues across 5 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
77
Security headers
85
Email security
100
DNS health
75
Network security
100
GDPR outside view
88
Average
88

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

Breach exposure

Leaked credentials and lookalike domains from OffSeq Breach. The counts are free; the detailed lists are paid add-ons.

Dark web exposure

Add-on

Leaked records that mention datev.de, from OffSeq Breach.

Total records
29,642
Employees
1
Customers
29,590
Third parties
51
Weak passwords
6%

Latest record dated 2025-07-02 · 73 subdomains affected

See the 10 newest leaked credentials

A one-off add-on to this report that lists the most recent identifier and password pairs OffSeq Breach holds for datev.de.

Select it in the checkout above.

Masked preview

  • –secure8.datev.de2025-07-02

Breach keeps ingesting new leaks, so these numbers can grow between scans.

Open in Breach(opens in a new tab)Monitor on Breach(opens in a new tab)

Technical appendix

Business context, site observations and technical notes gathered during the scan, and the standards behind each reference.

Business context

Business profile

DATEV eG operates in the finance and public sector industries, providing software and professional services primarily to tax consultants, auditors, legal advisors, and companies. The business model focuses on delivering tailored software solutions and knowledge services, positioning itself as a market leader in Germany. The website's structured navigation and content indicate a well-established partnership ecosystem and a focus on growth through digital transformation. While direct contact information is not visible in the provided content, the presence of a cookie consent mechanism and professional branding supports credibility. The company likely benefits from a strong reputation and extensive client base in its sectors.

Security posture

The website employs HTTPS with an excellent SSL configuration and integrates a cookie consent banner for GDPR compliance. No exposed sensitive data or vulnerable libraries were detected. However, the absence of explicit security headers such as Content Security Policy (CSP), HSTS, or X-Frame-Options suggests room for improvement. There is no visible security policy or incident response contact information, which could enhance transparency and readiness. Overall, the security posture is solid but could be strengthened by publishing security policies and implementing additional HTTP security headers.

Recommendations

  1. Implement and publish a comprehensive privacy policy and terms of service accessible from the homepage.
  2. Add explicit HTTP security headers including CSP, HSTS, and X-Frame-Options to enhance protection.
  3. Provide clear contact information including emails and phone numbers for general and security-related inquiries.
  4. Publish a security policy and incident response contact details to improve transparency and trust.
  5. Consider adding a vulnerability disclosure policy or security.txt file to facilitate responsible reporting.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
DATEV eG
Description
Professionelle Unterstützung für Steuerberatung, Wirtschaftsprüfung, Rechtsberatung, Unternehmen und den öffentlichen Sektor.
Key services
Software solutions, Professional services, Knowledge and support for tax consulting, auditing, legal advice, companies and public sector
Content quality
excellent
Branding
consistent

Technology

Stack
jQuery 3.7.1, Slick Carousel, OneTrust Consent Management, Custom CSS and JS
Performance
moderate
Mobile
good
Accessibility
good
SEO
good

Security

Observed score
85/100
Good practices seen
  • HTTPS enforced
  • Cookie consent banner implemented
  • No visible exposed sensitive data

Analytics and tracking

Services
OneTrust Analytics
Tracking level
moderate
Privacy practices
good

Advertising

Tracking pixels
OneTrust
Marketing tools
OneTrust Consent Management
Transparency
basic

Site quality

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

Key observations

  1. Website is fully accessible with rich content and navigation.
  2. Strong focus on professional services in finance and public sector.
  3. Cookie consent and privacy mechanisms are implemented.
  4. No direct contact emails or phone numbers found in the provided content.
  5. No explicit privacy policy or terms of service links detected in the snippet.
  6. Use of modern JavaScript libraries and consent management tools.
  7. No signs of suspicious or malicious content.
Technical notes

Notes

The website uses a modern tech stack with jQuery 3.7.1 and Slick Carousel for UI components, supported by custom CSS and JavaScript. It integrates OneTrust for cookie consent management, indicating compliance with privacy regulations. The site is mobile optimized and accessible, with good SEO practices including meta tags and Open Graph data. Hosting appears to be managed internally or by a trusted provider associated with the domain's name servers. Performance is moderate, with asynchronous loading of analytics scripts. There is no detected CMS, suggesting a custom or proprietary platform. Technical risks are minimal but could be reduced by adding security headers and improving incident response visibility.
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

Earlier scans of this domain

  1. 88/100Low19 findingsView report
  2. 75/100Medium9 findings · partial scanView report
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