Blog · Shadow AI ·

Can you use ChatGPT with confidential documents?

The short answer: yes, under conditions. The responsible answer: not by pasting a raw PDF with client names, salaries, acquisition clauses or health data. The risk isn't theoretical - it's already in teams' daily usage.

The concrete risk

When you upload or paste a document into ChatGPT, Claude, Gemini or Copilot, you potentially expose:

  • Personal data (employees, clients, candidates)
  • Trade secrets (term sheets, strategy, pricing)
  • Contractual obligations (NDAs, confidentiality clauses)

AI vendor policies evolve (training opt-out, enterprise tiers), but your organisation remains responsible for processing under GDPR. Banning ChatGPT in IT policy doesn't stop usage : Shadow AI continues in parallel.

Who this matters for most

Beyond law firms - often first sensitized - these profiles already send sensitive documents to models:

  • Consulting & M&A - datarooms, due diligence reports, financial models
  • HR - contracts, reviews, internal policies
  • Finance & compliance - audits, vendor files, incidents
  • Leadership & ops - strategic summaries, client correspondence

Business need is real: save time on summarisation, translation, rewriting, key point extraction. The question isn't "should we ban AI" but "how to use it without leaks."

The solution: pseudonymize before sending

Recommended flow with Safe-Doc:

  1. Import the document (text PDF, DOCX, or pasted text)
  2. Detect and replace sensitive entities - 90+ types, FR/DE/ES/IT/UK/US coverage
  3. Review what will be masked (you control unchecked boxes)
  4. Export the cleaned version and paste it yourself into ChatGPT or another tool
  5. De-pseudonymize the AI response locally if you used reversible mode + mapping

Safe-Doc isn't an AI chat : it's a protection layer. Your query doesn't transit our servers. We don't store document content after processing.

What pseudonymization alone doesn't do

No tool guarantees zero risk. Very specific amounts, rare timelines or writing style can still allow indirect re-identification. Before any external send:

  • Check the residual leak scan in the interface
  • Adjust protection level N1-N2 (N3 on roadmap)
  • Human-review the pseudonymized text

For multi-document batches (dataroom), Safe-Doc Data Room keeps pseudonyms consistent across files - the same person keeps the same token everywhere.

Is ChatGPT Enterprise enough?

Enterprise tiers improve contractual confidentiality with the vendor. They don't replace PII masking if the document still contains identifying data in plain text. Upstream pseudonymization remains the most direct barrier - and works with any AI tool, not just OpenAI.

Try on a real contract or report - without changing your usual AI tool.