Practical guide

AI data leak risks: guide for SMBs

Understand and reduce data leaks linked to AI tools, prompts, extensions, connectors, and public models.

Author

Équipe éditoriale Cybernow

Rédaction et coordination des contenus cybersécurité

Équipe responsable de la préparation, de la mise à jour et de la coordination des contenus pratiques de Cybernow. Les sujets techniques et réglementaires doivent être attribués à un spécialiste identifié avant publication finale.

Areas of expertise

  • Cybersécurité pour PME
  • Services managés
  • Gouvernance et risques
Published 2026-04-24Updated 2026-04-24

Problem

Employees use ChatGPT, Copilot, or AI tools without a clear framework.

Expected outcome

A simple AI policy, technical guardrails, and an approval process.

7 minutesCybernow

Identify unapproved usage

Shadow AI creates data flows invisible to IT teams.

  • Survey teams on tools used.
  • Analyze browser extensions and connected SaaS.
  • Classify usage by risk level.

Define what must never be submitted

The rule must be concrete: customer data, secrets, proprietary code, contracts, and HR information.

  • Create a red list of forbidden data.
  • Train teams with prompt examples.
  • Add human review for sensitive decisions.

Deploy guardrails

Technical controls prevent the policy from staying theoretical.

  • Use enterprise accounts with training opt-out.
  • Enable DLP and logging.
  • Validate AI vendors before purchase.

Frequently asked questions

Can prompts expose data?

Yes, especially with public tools, unmanaged extensions, or personal accounts.

Should AI be banned?

No. Usage should be governed, tools selected carefully, and teams trained.

What is the minimum AI policy?

Allowed use cases, forbidden data, approved tools, and validation responsibilities.

Methodology and limitations

This content is a practical synthesis intended to guide an initial review. Applicable priorities, timelines, costs, and controls depend on your environment, assets, and risk level; validate them before making a decision.

Useful primary references:

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