Twitter said hackers accessed its internal systems to hijack some of the platform's top voices including US presidential candidate Joe Biden, reality TV star Kim Kardashian, former US President Barack Obama and billionaire Elon Musk and used them to solicit digital currency.

Twitter said employees with access to its internal systems had been successfully targeted by hackers who "used this access to take control of many highly-visible (including verified) accounts and Tweet on their behalf."..