How can a USB cable carry code?

Question

I like to think I’m fairly competent with computers but I don’t understand how this is a thing. see https://www.mitnicksecurity.com/blog/the-latest-malware-threat-the-usb-ninja-cable

In: 2

Answer 1

I agree but if you disguise a usb device as a usb cable, you could infect a computer.

So like if you took apart that cable the article is talking about you would find a circuit board with the necessary hardware and firmware to upload the malware.