arf-topic-a-privacy-risks-and-mitigations-part-1

The main EUDI Wallet privacy risks involve user tracking, collusion, and data breaches. These vulnerabilities emerge from Relying Party linkability and Attestation Provider linkability, enabling unauthorized profiling across digital interactions.

Mitigate Relying Party linkability by applying technical measures like salted-attribute hashes to prevent correlation. Combine these with organizational controls to restrict data sharing and prevent collusive user tracking across relying parties.

Yes, the EUDI Wallet ecosystem supports salted-attribute hashes as a technical measure to protect against data breaches. This cryptographic technique prevents unauthorized correlation of user attributes during relying party verification.

Collusion enables user profiling when multiple Relying Parties or Attestation Providers share transaction data. This cross-service linkability allows them to reconstruct user behavior patterns and track individuals without their consent.

The best way to analyze EUDI Wallet privacy vulnerabilities is to systematically evaluate user tracking, collusion, and data breach vectors. Assess both Relying Party and Attestation Provider linkability to identify potential profiling risks before implementation.