Microsoft 365 for Law Firms — Zero-Knowledge Backup & Migration
Zero-knowledge Microsoft 365 backup and tenant migration for law firms — privileged client data the vendor cannot read. § 203 StGB and § 43e BRAO aware.
Frequently asked questions
Can a law firm use a cloud Microsoft 365 backup tool without breaching § 203 StGB?
§ 43e BRAO permits engaging IT service providers where confidentiality is safeguarded and the provider is obligated to secrecy. A zero-knowledge tool is the strongest safeguard because the provider structurally cannot read the data: GTools.pro derives the key from your passphrase and stores only ciphertext, and the Desktop edition keeps everything on the firm’s own machine. This is general information, not legal advice.
Is client data ever readable by GTools.pro?
No. On Desktop, backup, export and migration data never leaves the operator workstation. On Cloud, only ciphertext is persisted and we cannot decrypt it without your passphrase. That is the core difference from data-processor backup vendors who hold readable copies by default.
How do we migrate matters when a partner moves firms?
GTools.pro Move performs Microsoft 365 → Microsoft 365 tenant-to-tenant migration including mailboxes, OneDrive, SharePoint and Teams chat history. It is one-time per-seat project pricing (EUR 9 / migrated seat, EUR 450 project floor); checkout is opening soon, so join the waitlist.
Where is our backup data stored?
Wherever you choose. On Desktop the destination is the firm’s machine or any local/SMB/S3 target; on Cloud it is a customer-selected region, ciphertext only.
Related topics
Microsoft 365 backup law firm
Kanzlei Microsoft 365 Backup
§ 203 StGB cloud
attorney client privilege M365 backup
law firm tenant migration
Why it matters for Kanzleien & Rechtsanwälte
Microsoft 365 backup and migration for law firms where privileged client data never becomes readable to a third-party vendor.
Compliance drivers
§ 203 StGB (professional secrecy). Attorneys are Berufsgeheimnisträger under § 203 StGB; handing readable client data to an IT provider can engage criminal liability unless the data stays inside the confidentiality boundary. § 203 StGB — gesetze-im-internet.de
§ 43a BRAO (duty of confidentiality). The BRAO imposes a professional duty of confidentiality on attorneys; a tool the vendor cannot decrypt keeps privileged material under the firm’s sole control. § 43a BRAO — gesetze-im-internet.de
§ 43e BRAO (engaging service providers). § 43e BRAO expressly regulates using IT/cloud service providers: it is permitted where access is necessary, the provider is bound to confidentiality in text form, and (for mandate-specific services) the client consents. A zero-knowledge provider that structurally cannot read the data is the strongest possible safeguard — a plain Art. 28 GDPR DPA alone does not discharge the § 203 duty. § 43e BRAO — gesetze-im-internet.de
Sector challenges and how GTools.pro answers them
Most cloud backup vendors are data processors holding readable copies of privileged files — a direct § 203 / § 43e concern. Zero-knowledge by default; the Desktop edition keeps every backup, export and migration on the firm’s own workstation, so no third-party server ever holds readable client data.
Matter files must be retained and producible for years after a case closes. Point-in-time exports to storage the firm controls, with per-export history — immutable evidence without a rolling vendor cloud.
Lateral moves and firm mergers require moving mailboxes, OneDrive and Teams between tenants cleanly. Move performs Microsoft 365 → Microsoft 365 tenant migration including Teams chat history (checkout opening soon; one-time per-seat project pricing).
Microsoft 365 workloads that matter here
Exchange Online (matter correspondence)
OneDrive / SharePoint (document management)
Teams chat + channels (matter collaboration)
Entra ID + Conditional Access (access governance)
Recommended editions
Backup (Desktop). Client data never leaves the firm’s workstation — the cleanest § 203 / § 43e posture.
Move (migration). One-time, per-seat tenant-to-tenant migration for lateral moves and mergers — checkout opening soon.
Limitations & out-of-scope — what GTools.pro is not for in Law Firms & Legal
GTools.pro is an M365 administrator toolkit, not a practice-management or DMS system, and it does not provide legal advice on your § 203 / BRAO obligations — engage your firm’s data-protection counsel. Move handles Microsoft 365 → Microsoft 365 only; migrations from non-M365 platforms are out of scope. Restore is a manual operation from the exports, not a one-click portal.
This page is general information, not legal, tax, or regulatory advice.