Techniker Krankenkasse · Healthcare · Germany
Medium risk. 3 critical or high findings in GDPR outside view.
Techniker Krankenkasse (TK) is a leading German statutory health insurance provider offering comprehensive health and care insurance services. The website emphasizes digital innovation, customer convenience, and broad service offerings including electronic patient records, digital health coaching, and prevention programs. TK targets a wide audience including students, professionals, families, and seniors, positioning itself as a trusted and customer-centric insurer in Germany. The site is professionally designed with excellent content quality and clear navigation, supporting multiple languages and accessibility features. From a technical perspective, the website is hosted on Apache servers managed by Versatel, uses modern JavaScript analytics tools such as Webtrekk and Tealium, and integrates external services like Google Maps and Adform for advertising. The site is mobile-optimized and performs well with fast load times and good SEO practices. Security is robust with HTTPS enforced, strong TLS 1.2 cipher suites, and comprehensive security headers including CSP and HSTS (though HSTS could be improved with subdomain inclusion and preload). Privacy compliance is well addressed with clear privacy and cookie policies, a consent management dialog, and GDPR adherence. However, no explicit security policy or incident response contact information is published, and no vulnerability disclosure or security.txt file is found. Overall, the security posture is strong with no detected vulnerabilities or exposed sensitive data. The website demonstrates a mature digital presence with extensive analytics and marketing tools, balanced with user privacy considerations. Strategic recommendations include enabling TLS 1.3, improving HSTS settings, implementing OCSP stapling, and publishing incident response and vulnerability disclosure information to enhance trust and security transparency.
Scanned
NIS2 Art. 21(2)
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.
3 findings rated critical or high. Fix these first.
These are the privacy signals visitors and data protection authorities look for under GDPR.
EU businesses are subject to strict GDPR requirements
What to do: Implement comprehensive GDPR compliance including privacy policy, cookie consent, and data protection measures
GDPR requires clear information about cookie usage
What to do: Add a dedicated cookie policy explaining cookie usage and purposes
GDPR requires explicit consent for non-essential cookies
What to do: Implement a cookie consent banner that appears on first visit
Need hands-on remediation? Email guard@offseq.com
This scan found 15 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.
€25per month
Email alerts on material changes and an exportable JSON history of every change.
Billed monthly to your card. Cancel anytime. See sample alerts.
€39.90one-time
Prices incl. 21% VAT. Secure checkout by Mollie; sold by SEQ SIA, Latvia.
Each check with its score, findings and the evidence it collected.
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
Not counted
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.
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
Leaked credentials and lookalike domains from OffSeq Breach. The counts are free; the detailed lists are paid add-ons.
Leaked records that mention tk.de, from OffSeq Breach.
33 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 tk.de.
Select it in the checkout above.
Breach keeps ingesting new leaks, so these numbers can grow between scans.
Business context, site observations and technical notes gathered during the scan, and the standards behind each reference.
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
Rate this report, add an optional comment, and tell us if you want a security specialist to follow up.
Reviews of this site
Share your experience with tk.de. Every review is verified by email and published after moderation.
Community rating
No published reviews yet. Be the first to review tk.de.