https://www.theregister.co.uk/2019/01/14/bird_scooter_hack_threat/

Bird has apologized for sending a legal threat to a blogger who outlined how its scooters-for-hire – those electric gizmos littering city streets – can have their motherboards replaced to unlock them from their app, and driven away.

Back in December, journalist Cory Doctorow received a takedown request [PDF] for a blog post on Boing Boing in which he referenced and linked to a post on a different website, Hackaday, that outlined how replacement motherboards for Bird's network of scooters can be sourced online for $30 and used to take control of the machine.