Map direct and indirect identifiers
Names and contact details are obvious. Dates, precise locations, rare job roles, project descriptions and quoted messages may be identifying in combination. Attachments and file metadata need attention as well as database columns.
Preserve only necessary relationships
Consistent replacement identifiers can preserve useful joins, but pseudonymous data can still carry identification risk. Keep any mapping key separately controlled. Assess whether linking records creates new exposure that was not visible in each source alone.
Review the proposed release
Consider the recipient, available outside information, intended tasks and controls. Document transformations and known limitations. Removing identifiers is one possible measure within a broader privacy process; it does not establish lawful sharing or satisfy every contractual obligation.
Practical guidance, not legal advice or a buyer specification. Examples are illustrative. Reviewed October 20, 2026.