Contoso invites vendor guest users in Teams and wants them to use a…

Question

Contoso invites vendor guest users in Teams and wants them to use an internal Copilot Studio agent that reads confidential HR policies from SharePoint. What is the primary risk if guests are granted agent access without redesign?

Accepted Answer

Guests may gain conversational access to knowledge or actions beyond their intended business boundary if authentication, knowledge permissions, and channel access are not tightly scoped. — Guests in the same Teams hallway can wander into the wrong door if the agent’s knowledge and auth aren’t scoped — confidential HR policies are not vendor reading material.

Answer

Guests automatically receive Global Administrator rights in Entra ID when they message any agent.

Answer

Teams always blocks all Copilot Studio agents when any guest exists in the tenant, so the risk is zero usage.

Answer

SharePoint knowledge becomes read-only for employees whenever a guest is added to any Team.

Contoso invites vendor guest users in Teams and wants them to use an internal Copilot Studio agent that reads confidential HR policies from SharePoint. What is the primary risk if guests are granted agent access without redesign?

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Full Explanation