识别和处理允许的接触点访问的数据。确保任何不必要的接收者都无法访问任何数据。应通过安全访问控制数据流，避免未经授权的访问。 Identifying and handling data accessed by the permitted touch points. Ensure that no data is accessible to any unnecessary recipient. Data flow should be controlled through secured access and free from unauthorized access.