sensitive datahealth dataGDPR

Health data: sick leave, medical visits, accommodations — the blind spots

Name: CleanIssue
Price range: €€

Published on 2026-04-164 min readCleanIssue

> TL;DR: software vendors handle more health data than they realize. Three angles where the health/data boundary is poorly protected.

Health data is not always where you expect it

A product isn't supposed to store medical files. In practice: scanned sick notes, workplace accommodations, medical visit proofs — health data moves around.

For more — see our security audit for AI agents.

The three angles to review

sick note attachments stored like any other document;

free-text fields in manager tools containing health info;

exports that include detailed absence reasons by default.

What should be clear

GDPR treats this data as sensitive (Article 9). Encryption, access and logging should reflect that, not the level of a regular file.

For software vendors

CleanIssue specializes in security reviews for software handling sensitive data. If you're building a product, payroll tool, or ATS and want an external review of your exposure before a client audit or security questionnaire, see our offer for software vendors.

Key Takeaways

Identify and test your exposed attack surfaces before a third party does.

Client-side security controls never replace server-side validation.

Regular audits are more effective than one-time checks — vulnerabilities appear with every deployment.

Building software? CleanIssue performs security audits for your product in real-world conditions, no source code access needed. For a first read of your exposure, start with an external review of your application.

Go further

Explore the SaaS page

The CleanIssue overview for software handling sensitive data.

See the External Review

The fastest format to clarify the real exposure of your product.

Three adjacent analyses to keep exploring the same attack surface.

sensitive dataGDPR