It's great for reading a document from a network, input stream, user input, or other somewhat static representation.
对于从网络、输入流或其它某些静态表示法读取文档来说，这种方法是非常好的。
2
If your program responds to requests over a network, those requests might very well come from an attacker — so the network connection is an untrusted input.
如果您的程序响应网络上的请求，那些请求可能正是来自攻击者——所以网络连接是不可信的输入。
3
Now, by powering on a system connected to the network, it automatically flashes the BIOS without any user input, applies the correct BIOS Settings, and powers off again.