Actor × Project Coverage Matrix

This matrix gives you a complete picture of who has been active in which projects during the selected period. An actor active in every project simultaneously — especially a new actor — is an anomalous access pattern worth investigating. An actor active in only one or two projects is operating within an expected scope.

For access reviews and role-based access audits, this matrix is the most direct evidence of what each person is actually doing versus what their role permits.

What you can conclude

• An actor active in all projects (fully filled row) has the broadest operational footprint — verify that all project access is authorized.
• An actor newly active in projects they had no prior involvement in should be investigated — was this a legitimate access grant or an unexpected expansion?
• Empty cells (no activity in a project) for an actor who supposedly has access may indicate that access was granted but is not being used — a candidate for access revocation.

How this chart works

Binary heatmap showing whether each actor has any events in each project in the selected period. Date filter only — project filter does not apply to this visual, as it shows cross-project coverage by design.