Privacy & Data Protection
Pseudonymization
Pseudonymization replaces identifiers with tokens or aliases that can be reversed with a separately-held key — reducing exposure while the data remains personal information.
Pseudonymization swaps direct identifiers for placeholders — "Client A," a token, a hash — while keeping a separate mapping that allows re-identification. GDPR names it explicitly as a safeguard; the data remains personal information because the link still exists.
It is the natural technique for AI prompts: replace the client name with a tag, get the drafting help, restore the name locally if needed. The provider sees structure, not identity — and the mapping never leaves the organization.
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See it in your own organization.
Sanitized AI inventories the AI tools in use and redacts sensitive data from prompts before it leaves.