During audits Copilot Readiness in Microsoft 365, we are increasingly seeing a recurring scenario: Copilot returns document fragments that the user should never have access to.
This is not an AI error, but the result of years of unreviewed powers in M365, misconfigured teams and folders in SharePoint, OneDrive and Microsoft Teams.
A real-life example from the M365 audit
At one company, marketing began receiving snippets of budgets and cost analyses in Copilot responses.
Why did this happen? Legacy permissions from 6 years ago still gave access to sensitive files, and Copilot merely reflected the existing situation.
This is a typical risk when implementing AI in an environment Microsoft 365, which shows the importance of security audits and reviewing M365 governance.
Why does Copilot reveal data that the user should not see?
In most organizations, the power structure is:
- too elaborate and layered,
- modified ad-hoc over the years,
- rarely audited.
The result? M365 Sensitive Data may be available to people who shouldn't see them, and Copilot simply catches them.
Most common problems discovered in ISCG audits
During audits Copilot Readiness In ISCG, we most often come across:
- oversharing in Microsoft 365,
- SharePoint's erroneous inheritances,
- Coincidentally, public Teams,
- Entra ID groups without owners and with excess members,
- data that Copilot can realistically reveal.
Without getting these elements in order, full implementation of Copilot may involve unwanted disclosure of information.
Copilot Data Visibility Map - the key to secure AI deployment
As part of the audit, we prepare Copilot Data Visibility Map, which shows exactly what data in the organization is available to Copilot.
This is the first step to:
- assessment of real risks,
- identification of redundant entitlements in Microsoft 365,
- Preparing an effective data security plan.
These maps are a unique element of our audits and a differentiator among service providers Copilot security.
Why M365 audit and governance are essential before implementing Copilot
Copilot does not create new rights.
It only works on what the user already has access to. Therefore:
- arrangement Microsoft 365 entitlements,
- succession reduction,
- Closure of obsolete groups and teams,
- securing sensitive data,
...These are the basic conditions for a Copilot deployment to be secure and compliant with security policies.
At ISCG, we carry out complex projects related to:
- audits Copilot Readiness,
- remediation of M365 permissions and sensitive data,
- Copilot implementation with policies M365 governance,
- training for administrators and users.
If you want to see what kind of data Copilot could see in your organization, we will prepare a detailed visibility map and a plan of action to improve security.
