Microsoft patches data sensitivity flaw in Copilot Studio
Microsoft has released version 2507.1 of Copilot Studio. The update focuses entirely on a backend security patch rather than new features. The patch fixes a specific error where nested expressions failed to accurately identify sensitive values. This flaw previously allowed complex logic chains within custom AI agents to bypass intended data restrictions. The update is now rolling out across all regions. It ensures that custom agents built by internal IT teams correctly apply compliance rules when handling company data.
Until now, companies rolling out custom Copilot agents faced a hidden risk. If a user asked a complex question that required multiple layers of logic to answer, the system could lose track of which data was marked sensitive and accidentally expose restricted information. This update tightens the underlying code so that data restrictions hold firm regardless of how complicated a prompt becomes. It signals that Microsoft is quietly fixing the foundational plumbing of custom AI tools before pushing them to a broader audience.
Analysis
Your IT department is likely experimenting with custom Copilot agents, but this patch proves the underlying data controls are still under construction. Ignore any internal beta tests for custom bots and focus your energy on mastering the standard Copilot features in Teams meetings where the time savings are already proven.
Source note
Pulse published by Collab365 Spaces. Cite as "Microsoft patches data sensitivity flaw in Copilot Studio", Collab365 Spaces.