Local Redaction
Removing or masking sensitive data on a customer's own servers — before it is ever sent to an external AI model.
Related terms
Masking
Hiding or replacing sensitive information with placeholder values so the underlying data can't be viewed or extracted.
Sensitive Data
Any personal, financial, medical, or commercially confidential information that could cause harm if exposed without authorization.
Legal Case References
Identifying details within legal documents that must be protected under client privilege before AI-assisted review.
Legal Tech Compliance
Standards governing how law firms use AI on contracts, case files, and privileged client documents.
LLM (Large Language Model)
An AI model trained on large text datasets to understand and generate language, used for summarization and analysis.
See Local Redaction in practice
Questa AI anonymizes sensitive data before it reaches any AI model — across documents and live prompts, with governance and data-residency control.