https://www.theregister.co.uk/2017/07/10/io_hijacking_in_transition_cockup/

Bloke takes over every .io domain by snapping up crucial name servers

Blimey - they were lucky that no-one else spotted this first.

Quote...until the registry finally acted and revoked his registration of the domains.

Aw. I suppose he wouldn't get much mileage with ICANN if he were that way inclined.

So much potential.