这还确保应用程序后端以您通常的特权运行，这样就不会导致关键的文件对外公开，这是一个重要的安全措施。
It also ensures that your application back end runs with your usual privileges, so you don't have to make crucial files world-writeable, which is a big plus.
当然不是所有的应用程序都会访问关键数据，但这些程序的开发人员确实能够通过加入访问控制来增强其应用程序的安全。
Certainly not all applications access critical data, but developers of those that do can enhance the security of their applications by building in access control.
当关键数据被其他软件控制的时候，开发人员可以添加额外的应用程序层和数据级安全。
Developers can add an extra layer of application and data-level security when critical data is controlled by their software.
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