The tenant is already overshared. Years of legacy SharePoint and Teams sharing - most of it never reviewed by the people who own the workspace. With Copilot in the loop, an overshared document no longer sits quietly: it gets retrieved, summarised, and surfaced to whoever asks.
And the auditors are catching up. ISO 27001, TISAX, SOC 2, NIS2, GDPR Art 30 - every framework asks the same question: who has access, when was it last reviewed, by whom, and why. Screenshots and PowerShell exports stopped being a credible answer.
access-audit.ps1 - quarterly · the report nobody wants to send
PS> Get-SPOSite -Limit ALL | Get-AccessSummary
⚠ 94 workspaces · last reviewed > 24 months · reviewer unknown