Supplementary Agreement for Persons Bound by Professional Secrecy

This English version is provided for convenience only. The German version is legally binding; in the event of any discrepancy between the two versions, the German version shall prevail.

Subject matter

This Supplementary Agreement for Persons Bound by Professional Secrecy is concluded between the Customer and centron GmbH, who are the parties to the centron main contract or order (the “Main Contract”). The parties agree that this Supplementary Agreement supplements the Main Contract.

To the extent that personal data are also processed on behalf of the Customer (data processing), the Data Processing Agreement concluded between the parties remains unaffected and is supplemented by this Supplementary Agreement.

Customer’s duty of confidentiality

As a person bound by professional secrecy, the Customer is subject to statutory duties of confidentiality, in particular under Section 203 of the German Criminal Code (StGB) and – depending on the professional group – the relevant provisions of professional law, in particular Section 43e of the German Federal Lawyers’ Act (BRAO) and Section 26a of the German Federal Notaries’ Act (BNotO).

The Customer advises centron that the unauthorised disclosure of third-party secrets may have criminal-law consequences.

Obligations of centron

• centron undertakes to safeguard all third-party secrets that become known to centron, or could become accessible to centron, in connection with the provision of the contractually owed services.
• centron undertakes to use customer data and other confidential information exclusively to the contractually agreed extent and only for the provision of the contractually owed services.
• centron will obtain knowledge of third-party secrets only to the extent necessary for the proper performance of the contract.
• Use for its own purposes or for purposes unrelated to the contract is excluded.

Persons and third parties engaged

centron may engage its own employees and other persons to provide the contractually owed services.

• centron ensures that all persons engaged, insofar as they could obtain knowledge of third-party secrets in connection with their activities, are bound to confidentiality in text form before commencing their activities and are instructed about the criminal-law consequences of a breach of duty.
• They, too, may obtain knowledge of third-party secrets only to the extent necessary for the tasks assigned to them.
• Insofar as centron engages other companies or other third parties for whom such a possibility of obtaining knowledge exists, centron ensures that these persons are bound accordingly.

Continued validity

The duty of confidentiality continues to apply beyond the termination of the Main Contract and beyond the end of the respective employment or contractual relationship of the persons engaged.

Disclosure

• Third-party secrets are disclosed to authorities or other third parties only to the extent that centron is legally obliged to do so or the disclosure is otherwise legally permissible.
• To the extent legally permissible, centron will inform the Customer before such a disclosure.
• In the case of official or judicial measures, too, access to confidential information is restricted to the extent required by law.

Information security

centron operates an information security management system certified to ISO/IEC 27001 on the basis of IT-Grundschutz and implements appropriate technical and organisational measures to protect confidential information. Access to systems, data carriers and operational areas is restricted to authorised persons and to the extent required in each case.

centron provides current certificates and evidence via the Trust Center.

Relationship to the Main Contract

Except for the provisions expressly made by this Supplementary Agreement, the Main Contract remains unchanged.

Insofar as provisions of this Supplementary Agreement and of the Main Contract contradict each other, the provisions of this Supplementary Agreement take precedence with regard to the duties of confidentiality and secrecy protection governed herein.

Version: September 2026 · centron GmbH · Supplementary Agreement for Persons Bound by Professional Secrecy

Download the Supplementary Agreement as PDF (1.7 MB)