document 1 before: Document[id=1, owner=alice, team=team-a, title=Q3 plan] carol update(forged owner=carol) -> ALLOWED document 1 after: Document[id=1, owner=carol, team=team-b, title=hijacked] carol updateTitle(1, "hijacked") -> DENIED (AuthorizationDeniedException: Access Denied) document 1 after: Document[id=1, owner=alice, team=team-a, title=Q3 plan]