Classify the data first, then decide what can use cloud AI, what must be redacted, and what stays local.
Risk to watch
Data leakage
A useful answer is not worth losing control of personal, financial, or contractual information.
Proof to collect
Audit trail
Capture upload, redaction, access, review, export, and rollback evidence before expanding access.
TL;DR
TL;DR: How to design practical document AI workflows with redaction, scoped access, audit trails, and human review. The practical move is to choose one workflow, test it with real data, keep a human review point, and measure the result before scaling.
Key takeaways
Start with the document boundary: Before choosing a model, define which documents are allowed, which fields are sensitive, who may access them, and what output is acceptable.
Use redaction and projections: A secure workflow can send a reduced or synthetic view of a document to an AI tool while keeping the original file protected.
Keep audit trails: Log the source file, task, prompt version, model or tool used, reviewer, decision, and any manual override.
Design for review: AI can classify, extract, summarise, and draft.
Use local-first patterns where needed: For sensitive work, a Cloak-style local or controlled environment may be more appropriate than a public SaaS workflow.
Start with the document boundary
Before choosing a model, define which documents are allowed, which fields are sensitive, who may access them, and what output is acceptable. In Australia, documents containing personal information fall under the Privacy Act, and the OAIC's privacy guidance is the starting point for what handling obligations apply.
A secure workflow can send a reduced or synthetic view of a document to an AI tool while keeping the original file protected. Vendor data-handling terms matter here too: check what the provider commits to on retention and training, such as OpenAI's published enterprise privacy commitments.
Log the source file, task, prompt version, model or tool used, reviewer, decision, and any manual override. The Australian Cyber Security Centre's guidance on logging and access control is a practical reference for what a defensible trail looks like.
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