Certain critical updates should always be done with pessimistic locking.

进行特定的关键性更新时，应始终使用悲观锁定方式。

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If you are an administrator for multiple machines we strongly recommend you subscribe to this list to be notified of critical updates that may affect your system security.

如果您是很多台计算机的系统管理员我们极力的推荐您订阅列表。列表将提醒你那些可能影响到你的系统安全的关键升级。

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It organizations must be prepared to handle mergers that require integrating heterogeneous applications, or to implement critical process updates that affect multiple systems.

IT组织必须准备好处理需要整合异构应用程序的合并，或实现影响多个系统的关键流程更新。

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President Obama, the Federal Trade Commission, the National Security Agency and several other government agencies have all stressed the importance of software updates and their critical impact on the cybersecurity of consumer, business and government computer systems.

FORBES: ACLU Files FTC Case Against Wireless Carriers Over Not Updating Android Phones

With 32.1 million users and the ability to provide immediate updates in real time, Twitter has become the single best way to disseminate critical information worldwide.

FORBES: The Case for Twitter