Note: Find information in the BSD newsletter in the Resources section on building a small NetBSD kernel as a starting point for an embedded system.

注意：要查找关于构建小型NetBSD内核作为嵌入式系统的起点的信息，可参阅参考资料部分中的BSD新闻稿。

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This kind of malicious software can hide the computer operating system and embedded devices, recording the internal structure of the network, password password and other information.

这类恶意软件能够对计算机操作系统和嵌入式设备进行隐蔽探测，记录网络内部结构、口令密码等信息。

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At present, network information audit system is almost based on text information filtering, but badness information is embedded into image or image file directly by badness information provider.

目前网络信息审计系统大多基于文本信息的过滤，但不良信息的提供者将不良信息嵌入到图像或直接以图像文件，绕过监控。

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