Microsoft 365 for Healthcare — Zero-Knowledge Backup & Audit
Zero-knowledge Microsoft 365 backup, security audit and migration for hospitals and medical practices — patient data the vendor cannot read. GDPR Art. 9 and § 203 StGB aware.
Frequently asked questions
Is Microsoft 365 backup GDPR-compliant for a medical practice?
Backup itself is not what determines compliance — the question is whether the backup processor can read patient data. GTools.pro is zero-knowledge by default: the encryption key is derived from your passphrase via Argon2id and the server only ever stores ciphertext, so the copy of Art. 9 health data outside your tenant is unreadable to us. On the Desktop edition the data never leaves the operator machine at all.
Does a backup vendor holding patient data breach § 203 StGB?
Disclosing patient secrets to a service provider can engage § 203 StGB unless the data stays inside the confidentiality boundary and the provider is properly obligated. GTools.pro minimises this by design: Desktop keeps data on your machine, and Cloud holds only ciphertext the vendor cannot decrypt. This is general information, not legal advice — confirm with your data-protection officer.
Can I keep 10-year patient-record backups I control myself?
Yes. GTools.pro produces point-in-time exports to storage you choose (local, SMB, or S3-compatible on Desktop; a customer-selected region on Cloud), so you can retain immutable evidence for the § 630f BGB retention period without relying on a rolling vendor-managed cloud.
Does GTools.pro back up Microsoft Teams chat for clinical teams?
Yes — Teams chat, channel messages, OneDrive, SharePoint, Exchange, Planner and Bookings are all covered. Microsoft 365 Backup (native) does not include Teams chat.
Related topics
Microsoft 365 backup healthcare
GDPR patient data M365
medical practice Microsoft 365 backup
Gesundheitswesen Microsoft 365 Backup
§ 203 StGB cloud backup
Why it matters for Gesundheitswesen
Back up, audit and migrate Microsoft 365 for hospitals and medical practices without a vendor ever being able to read patient data.
Compliance drivers
GDPR Article 9 (special-category health data). Patient data is special-category personal data under Art. 9 GDPR, so any processor that can technically read it widens your compliance surface — a zero-knowledge tool the vendor cannot decrypt keeps that surface to a minimum. GDPR Art. 9 — gdpr-info.eu
§ 203 StGB (professional secrecy). Physicians and their agents are bound by criminal professional-secrecy rules under § 203 StGB, and a standard Art. 28 GDPR data-processing agreement does not by itself discharge that duty — so a tool that stays on the operator machine (Desktop) or only ever holds ciphertext, and thus needs no place in the confidentiality chain at all, is the cleanest position. § 203 StGB — gesetze-im-internet.de
§ 630f BGB (patient-record retention). Patient records must generally be retained for 10 years under § 630f BGB, so a point-in-time export you control (not a rolling vendor cloud) is a clean way to hold immutable evidence. § 630f BGB — gesetze-im-internet.de
KRITIS / BSI-Gesetz (larger hospitals). Hospitals above the BSI-KritisV case-number threshold are critical infrastructure with heightened IT-security duties; minimising third parties that can read clinical data supports that posture. BSI — Kritische Infrastrukturen
Sector challenges and how GTools.pro answers them
Microsoft 365 Backup (native) retains for a fixed window and cannot back up Teams chat — clinical coordination lives in Teams. GTools.pro Backup covers Teams chat and channel messages with configurable retention, and the key is derived from your passphrase so the backup store is ciphertext even to us.
A data-processor backup vendor holding readable copies of patient data multiplies your § 203 / Art. 9 exposure. Zero-knowledge by default: the server only ever sees ciphertext, and the Desktop edition keeps data on the operator machine entirely.
Auditors and the DPO need point-in-time evidence of who could access what. Watchtower exports signed, point-in-time SharePoint-permission, oversharing and privileged-access reports from Microsoft Graph metadata — nothing is persisted server-side.
Entra ID roles + Conditional Access (privileged access)
Recommended editions
Backup. Teams-chat-inclusive, zero-knowledge M365 backup with configurable retention — EUR 14 / user / year.
Watchtower (audit). Point-in-time permission + oversharing evidence for the DPO and auditors — EUR 7 / user / year.
Limitations & out-of-scope — what GTools.pro is not for in Healthcare & Life Sciences
GTools.pro is an administrator toolkit, not a certified medical-device or clinical-records system, and it is not a managed backup service with a vendor-operated restore portal — restore is a manual operation the operator performs from the exports. It does not replace your DPO’s legal assessment or a signed Auftragsverarbeitungsvertrag (AVV/DPA) where one is required. Coverage is bounded by the Microsoft Graph permissions you grant.
This page is general information, not legal, tax, or regulatory advice.