An organization wants to share personal records with a partner analyzing data for usage trends. The records contain details that must not expose individuals, but the partner requires data fields to remain intact for accurate modeling. Which method meets these criteria most effectively?
Pseudonymization replaces direct identifiers with reversible tokens, allowing organizations to share structured data for analysis without exposing individual identities. It satisfies privacy compliance (like GDPR Article 4) while maintaining data usability for modeling. In contrast, hashing and masking obscure data irreversibly or partially, and symmetric encryption limits accessibility until decryption.
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Why is pseudonymization better for data sharing under GDPR?