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MediumUnlawful Data UseRealized

Non-consented data in training / RAG

Data & Input Integrity

Description

Personal or confidential data used for training or indexing without lawful basis or purpose limitation, breaching privacy law.

Example scenario

Customer chat transcripts are indexed for RAG without consent, surfacing one customer's data to another.

Real-world evidenceRealized

In 2023 the National Eating Disorders Association (NEDA) deployed its AI chatbot 'Tessa', which immediately provided harmful diet and calorie-restriction advice to users in eating disorder recovery — a confirmed production harm incident. A 2024 lawsuit also documented a link between a teenager's suicide and interactions with a Character.AI companion chatbot, representing a confirmed production case of AI emotional harm.

Primary mitigations

  • Lawful-basis assessment
  • purpose limitation
  • data minimisation
  • consent registers
  • DPIA before ingestion.

Detection signals

Data-source consent audits; PII scanning of corpora; purpose-limitation reviews.

Mitigating controls

6
Non-agentic controls

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