When shuffling data, it is still advised to mask sensitive data. Remember also to consider relationships between the columns when shuffling data and make sure the original data set cannot be reconstructed.
In this scenario, last names and first names are grouped together but the email adresses are not in the same group. Consequently, the email column does not relate to the lname and fname columns. Since the email column usually contains information about first names and last names, it may help attackers to reconstruct the original data.
Additionally, the address1, city and email columns are not in any group, so they were not shuffled. This means it is possible to infer, for example, that Robert Damstra lives at 1619 Stillman Court, Lynnwood.
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To avoid the use of real credit card numbers, you can mask credit card numbers using the tDataMasking component.
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To avoid the identification of customers with their email addresses, you can mask email addresses using the tDataMasking component.
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To make it more difficult to read real addresses, you can add the address1 and city columns in other groups.
As tDataShuffling is supported on the Spark framework, you can convert this standard Job to a Spark Batch Job by editing the Job properties. This way you do not need to redefine the settings of the components in the Job.