Is it possible to implement usb wiretapping on arduino?

Question

Arduino

Arduino acts as an intermediary between the computer and the device (for example, the keyboard)
Two pins of the arduino receive a signal (rx from the computer and rx from the keyboard), and two pins of the arduino transmit the signal (tx to the computer and rx to the keyboard).
At the same time, write all data to microsd

Answer 1

It is forbidden

Answer 2

Can.

Answer 3

Anything is possible with arduino. If you know how

Answer 4

The microSD won't be able to keep up with writing data at that speed.

Answer 5

Amperka has such a project ready with sketches and so on.
wiki.amperka.ru/projects:keylogger