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Security report for datev.de

DATEV eG · Finance · Germany

Partial score · DNS & email only

75/100

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

DATEV eG is a leading European software house specializing in software, services, and knowledge for tax consulting, auditing, legal advice, businesses, and the public sector. The company offers a broad portfolio of over 200 software products and IT services, including cloud applications and digitalization solutions, targeting professionals such as tax advisors, auditors, lawyers, and educational partners. The website demonstrates a high level of digital maturity with modern technologies like jQuery, Angular, and comprehensive cookie consent management via OneTrust. However, the current SSL/TLS configuration is invalid, lacking modern protocol support and security features, which poses a significant security risk. The company maintains a strong market position with extensive service and support resources, social media presence, and trust indicators such as GDPR-compliant privacy policies and DMARC/SPF email protections. Overall, the website is professional, well-structured, and trustworthy but requires urgent remediation of its SSL/TLS security posture.

Scanned

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

NIS2 and GDPR posture

Checks completed
5of 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

No critical or high findings. These medium findings are worth fixing next.

  1. DNS health

    DNS sends visitors and email to the right servers. Misconfigured records can cause outages or let someone redirect your traffic.

    • Medium

      DNSSEC Not Enabled

      DNSSEC is not configured for this domain

      What to do: Enable DNSSEC to prevent DNS spoofing attacks

      • CAPEC-142
      • RFC 4033
      • RFC 4035

Keep watching datev.de

This scan found 2 issues across 2 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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  • 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
100
Email security
100
DNS health
90
Network security
100
Average
98
After the cap
75

Not counted

  • Security headers: did not complete in this scan.
  • GDPR outside view: did not complete in this scan.
  • 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, education, and government sectors, providing essential software and IT services to a large enterprise-scale customer base in Germany. Its business model revolves around delivering specialized software solutions and cloud services to professional groups including tax consultants, auditors, and legal professionals. The company leverages a strong partnership ecosystem and maintains multiple related domains for service delivery and customer engagement. The extensive content and service offerings indicate a mature organization with a focus on digital transformation and customer support. The presence of numerous training, event, and support resources suggests a commitment to customer success and continuous engagement.

Security posture

The security posture of DATEV.de shows a mixed maturity level. While the domain has valid SPF and DMARC records configured, indicating good email security practices, the SSL/TLS configuration is critically deficient with no valid certificate, no support for modern TLS protocols, and absence of HSTS and OCSP stapling. These issues expose the site to potential man-in-the-middle attacks and reduce user trust. No explicit security or incident response policies are found on the website, and no dedicated security contact channels are provided. The use of OneTrust for cookie consent and privacy management reflects compliance with GDPR requirements. Overall, the site needs immediate attention to its transport layer security to align with best practices and regulatory expectations.

Recommendations

  1. Immediately renew and correctly configure the SSL/TLS certificate to ensure secure HTTPS connections.
  2. Enable and enforce modern TLS protocols (TLS 1.2 and TLS 1.3) and disable deprecated protocols.
  3. Implement HTTP Strict Transport Security (HSTS) with includeSubDomains and preload directives.
  4. Enable OCSP stapling to improve certificate validation performance and security.
  5. Publish a security policy and incident response information on the website to enhance transparency and readiness.
  6. Provide clear contact channels for security incidents, such as security@ or abuse@ email addresses.
  7. Regularly audit and update privacy and cookie consent mechanisms to maintain GDPR compliance and user trust.
Technical notes

Notes

The website is built using a combination of jQuery 3.7.1, Angular 14.2.8, and Slick Carousel for UI components, with extensive use of CSS3 and HTML5 standards. It employs OneTrust for cookie consent management and integrates multiple external services for analytics and user tracking. The hosting appears to be managed by DATEV's own infrastructure, with dedicated nameservers and DNS records. Performance is moderate with a page load time of approximately 7 seconds and 91 resources loaded. The site is well-optimized for mobile devices and accessibility, with good SEO practices evident in metadata and structured navigation. However, the invalid SSL certificate and lack of modern TLS support represent significant technical risks that could impact user trust and compliance.
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. 88/100Low19 findingsView report
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