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How should I handle personal data in analytics reports?
Use aggregated or pseudonymised data wherever possible, restrict identifiable fields to those who need them, document your lawful basis and retention, and avoid sharing personal details in exports or emails. Most reporting questions can be answered without exposing individuals. Most questions need no individual-level detail.
Practical techniques:
- Replace names with IDs in analysis datasets
- Hide small groups that could identify individuals
- Mask sensitive fields in dashboards
- Delete data once no longer needed
Privacy laws such as GDPR and POPIA require appropriate safeguards. This is general guidance, so check your specific obligations with a qualified adviser. Also apply the same care to files saved on laptops or shared drives, which are a common and overlooked place for personal data.
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