These books are often written more clearly than the official manuals that come with the software, so they appeal to many legitimate users as well.
Often the legitimate user will hold the door for the intruder.
So I rehearsed my evacuation moves just in case the legitimate users appeared today.
Allow remote access only to legitimate users and services.
In all of the noise, legitimate users find the target site unavailable.
There are simply too many ways to work around this that works against legitimate users.
At the same time we must not strangle or restrict freedom of access for legitimate users.
The huge volume makes it impossible to serve legitimate users.
It is seen as an esoteric process designed to confuse many of its legitimate users.