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What is Differential Privacy

GlossaryEthics & Safety

A privacy technique that limits what can be inferred about any one person from aggregate data.

Definition

Differential Privacy is a privacy technique that limits what can be inferred about any one person from aggregate data. In practical AI work, it helps teams connect a concept to data, model behavior, product choices and evaluation. The useful question is not only what the term means, but how it affects quality, cost, reliability and risk in a real workflow.

Example

Before launching an AI feature, a product team uses Differential Privacy as part of a review for user harm, misuse, privacy and accountability risks.

Why it matters

Differential Privacy matters because AI systems affect people, rights, safety and trust, not only technical metrics.

How it works

Teams identify affected users, map possible harms, set safeguards, document decisions and review outcomes after deployment. For Differential Privacy, the key is to connect the definition with input data, assumptions, measurable outcomes and deployment limits.

Where it is used

  • Used in AI governance, policy review, risk assessment, privacy, content integrity and responsible deployment.

Limitations

Ethical labels do not prove safety by themselves; teams still need evidence, accountability and ongoing review.