A security researcher has created hacked Lightning cables that allow someone to take over a computer as soon as they are plugged into a Mac or PC.

Although the first version was a one-off, the researcher — known as MG — has now shown they can be factory-produced…

Motherboard had a demo of the handmade cable over the summer, verifying that it did what it claimed, and reports on the latest development after an online chat with MG.

This doesn’t mean the hacked Lightning cables are being put into mass production, and one hopes that MG is responsible about who he allows to buy them, but it does show that these devices can be manufactured at scale. $200 per cable would be a small sum to pay for a nation state, for example, who wanted to do something like get them included in goodie bags at international conferences.

MG is the creator of the O.MG Cable. It charges phones and transfers data in the same way an Apple cable does, but it also contains a wireless hotspot that a hacker can connect to. Once they’ve done that, a hacker can run commands on the computer, potentially rummaging through a victim’s files, for instance.

After demoing the cable for Motherboard at the Def Con hacking conference this summer, MG said, “It’s like being able to sit at the keyboard and mouse of the victim but without actually being there.”

At the time, MG was selling the handmade cables at the conference for $200 each. Now that production process has been streamlined.