C2 (2 points)
https://knobit.org/id/task/dsec-classification/C2
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| dcterms:license | https://creativecommons.org/licenses/by/4.0/ |
|---|---|
| owl:sameAs | https://bitbucket.org/reffa/ontology/id/task/dsec-classification/C2 |
| rdfs:label | C2 (2 points) en |
| schema:hasPart | dsec-classification C2: the hashed personal code is pseudonymous, not anonymous |
| schema:hasPart | dsec-classification C2: the merchant-by-day aggregate has cells of one customer |
| schema:identifier | C2 |
| schema:position | 2 |
| schema:text | Pseudonymous is not anonymous, 1 each. (a) card_txn_analytics.customer_hash, an unsalted SHA-256 of the personal identification code labelled 'anonymous' and public, is pseudonymised personal data (GDPR recital 26; an 11-digit code with a known structure is reversible by brute force): confidential, personal, at least. (b) merchant_day_spend.total_amount, grouped by merchant and day, is public although cells hold a single customer: not anonymous; a minimum group size with small cells suppressed, or a higher level. en |