Microsoft’s own deployment guidance for a secure and governed Copilot foundation is organized around three goals: remediate oversharing, set up guardrails and meet regulations. The table below turns those into the readiness areas most organizations work through.
Readiness areas summarized from Microsoft Learn guidance on Copilot data protection, Microsoft Purview protections for AI, and Copilot security and governance controls. The “What to look at” column is general guidance, not a Microsoft requirement.
| Readiness area |
Why it matters for Copilot |
What to look at |
| Identity and sign-in |
Copilot acts as the signed-in user |
Multifactor authentication for everyone, tight administrator roles, prompt removal of departed users, guest accounts reviewed |
| Oversharing and permissions |
Copilot can surface anything a user can view |
Company-wide sharing links, “anyone with the link” sharing, sites with no owner, broken permission inheritance, overshared sites with sensitive content |
| Sensitivity labels |
Labels add protection and are carried into Copilot interactions |
A small, clear label set; labels on sensitive sites and files; encryption on the most sensitive labels |
| Data loss prevention |
Rules can keep specific sensitive information out of Copilot responses |
Policies for the kinds of information you most need to protect |
| Retention and audit |
Copilot prompts and responses are stored and can be audited |
Retention rules for Copilot interactions, audit logging turned on and reviewed |
| Licensing and settings |
Features and controls depend on your plan |
Eligible base plan, Copilot licenses for the pilot group, web search setting, which optional AI models and agents are allowed |
| Rules for people |
Staff need to know what is approved |
An acceptable AI use policy, a pilot group, a way to ask “is this tool approved?” |
How do you find and fix oversharing?
Microsoft’s guidance recommends finding sites that are overshared, have no owner, are inactive or hold sensitive data Copilot could surface, then fixing access. The steps it describes include:
- Run sharing reports. Microsoft’s data access governance reports for sites help identify overshared data, and you can send a site access review to site owners.
- Hold sensitive sites back while you review them. Microsoft offers a site-level setting that limits discovery of content from selected sites in organization-wide search and Copilot responses. Microsoft says it is “designed as a temporary governance control” that buys time to review and right-size access.
- Fix access at the source. Remove excess users, groups and company-wide sharing links, rescope links to approved people, correct broken permission inheritance, and confirm an owner for every site.
- Prevent it from coming back. Restrict company-wide sharing groups and “anyone” links, and use site sensitivity labels to set privacy and sharing by default.
Microsoft says its SharePoint Advanced Management tools, which provide many of these site controls, are included with a Microsoft Copilot license.
How do sensitivity labels work with Copilot?
Sensitivity labels are the names you give to kinds of information, such as Confidential or Patient Information, with protection attached. Microsoft explains:
- Copilot and other supported AI apps do not return data to a user who does not have access to it. Labels add protection on top of permissions.
- When a label applies encryption, a user needs both the view and extract usage rights for Copilot to return that content.
- Copilot honors the encryption and usage rights that labels apply.
Microsoft recommends turning on sensitivity labels for files in SharePoint and OneDrive. Without that setting, the encrypted files Copilot can work with are limited. Start small: a few labels people understand will be used, and a long list will not.
What licenses do you need?
Microsoft sells Copilot as an add-on. Its licensing page lists eligible base plans, including:
- For smaller organizations (Microsoft Copilot Business): Microsoft 365 Business Premium, Business Standard, Business Basic, Apps for Business and Teams Essentials.
- For larger organizations (Microsoft Copilot): Microsoft 365 E5 and E3, Office 365 E5, E3 and E1, frontline plans, and several standalone service plans.
Microsoft also distinguishes two kinds of Copilot Chat. Web-based chat draws on the internet and is included with eligible Microsoft 365 plans at no extra cost. Work-based chat draws on the work information a person can access and needs a Microsoft Copilot license.
Some protections named on this page, such as advanced audit retention and some data governance tools, depend on your plan. Check the current licensing page before you buy.
What does Microsoft commit to?
Microsoft calls its commitments “Enterprise data protection.” They include:
- Use of Copilot by organizations “is covered by the terms of the Microsoft Products and Services Data Protection Addendum (DPA) and Microsoft Product Terms, with Microsoft acting as a data processor.”
- Prompts and responses get the same contractual terms and commitments Microsoft applies to email in Exchange and files in SharePoint.
- “Copilot respects your identity model and permissions, inherits your sensitivity labels, applies your retention policies, supports audit of interactions, and follows your administrative settings. The specific controls and policies will vary depending on the underlying subscription plan.”
- “Prompts, responses, and data accessed through Microsoft Graph aren’t used to train foundation LLMs” (Microsoft Learn privacy page).
Two limits are worth knowing:
- Web search is handled differently. When Copilot searches the web, generated search queries go to the Bing search service, which Microsoft operates under separate terms as an independent controller. Microsoft states that HIPAA compliance “doesn’t apply to web search queries as they aren’t covered by the DPA and Business Associate Agreement (BAA).” In commercial Microsoft 365 environments, web search is available unless an admin turns it off with the “Allow web search in Copilot” policy, so decide that setting before patient information is involved.
- Optional models and agents need a decision. Microsoft offers third-party AI models in Copilot and lets admins decide whether to use them. For most commercial customers outside the EU, EFTA and UK, Microsoft turns some of these models on by default. Microsoft says its Product Terms and Data Protection Addendum apply to those models, with the model provider acting as a Microsoft subprocessor, except models Microsoft labels “with Data Retention,” which are off by default and run under the model provider’s own terms. Admins also control which agents are allowed, and agents from other publishers have their own privacy statements and terms. Decide these settings on purpose, especially if you handle patient information.