There are constantly changing standards for APIs, gateways, security methods, screens, operating systems, and browsers.

网关、安全性方法、屏幕、操作系统和浏览器的标准经常改变。

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Other operating systems use more elaborate security models.

其他操作系统则使用了更精细的安全模型。

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The UNIX and Linux operating systems pose several security concerns from an enterprise perspective.

从企业角度看，UNIX和Linux操作系统显现出几个安全问题。

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To address the problem, Hyatt implemented mobile-device management systems that allow it to deal with multiple operating systems more smoothly and address security, monitoring and technical-support issues more efficiently.

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He spent 12 years at Sun Microsystems as a distinguished engineer where he worked on areas such as networking, security, and operating systems.

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However, I have a feeling that we really ought to be paying more attention to the security of our other operating systems now.

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