Significant Data Fiduciary (SDF)
A Data Fiduciary designated by the Central Government as warranting enhanced obligations due to the scale, sensitivity, or strategic importance of the data it processes.
Full Definition
Section 10 of the DPDP Act 2023 empowers the Central Government to designate any Data Fiduciary or class of Data Fiduciaries as a 'Significant Data Fiduciary' based on: the volume and sensitivity of personal data processed, risk to the rights of Data Principals, potential impact on the sovereignty and integrity of India, risk to electoral democracy, national security, or public order, and potential impact on rights of children. SDFs face a higher tier of obligations beyond those applicable to ordinary Data Fiduciaries: mandatory appointment of a Data Protection Officer (DPO) based in India, registration and use of Consent Managers, periodic Data Protection Impact Assessments (DPIAs), and independent audits by a Data Auditor.
In Indian Law
DPDP Act 2023, Section 10. The SDF designation is by Central Government notification — unlike GDPR where enhanced obligations (DPIA, DPO) are triggered automatically by processing type and scale. Large technology platforms, telecom companies processing national-scale data, and entities processing sensitive categories like health or financial data are expected to be designated SDFs once the Government issues the notification. No SDFs have been designated as of the DPDP Rules notification (November 2025).
Related Legal Sections
Frequently Asked Questions
What additional obligations does a Significant Data Fiduciary have?
SDFs must: (1) appoint a Data Protection Officer based in India, (2) appoint an independent Data Auditor, (3) conduct periodic Data Protection Impact Assessments, (4) comply with additional obligations specified in the Rules. These are in addition to all standard Data Fiduciary obligations.