This article is more than 2 years old.

August 30, 2015 This article is more than 2 years old.

Ride-sharing giant Uber is taking on two new staff members who have recently turned the world of vehicle security upside down.

Charlie Miller and Chris Valasek gained a high profile in July, when Wired published an article describing how they digitally carjacked reporter Andy Greenberg as he was driving a Jeep Cherokee. Miller and Valasek were able to take control of the vehicle’s stereo, air conditioning, windscreen wipers and, finally, its accelerator.

Miller, who worked at Twitter, and Valasek who worked at IOActive, a security firm, will join Uber next week, according to Reuters.

The company’s valuation has soared, passing $50 billion in July. Its latest additions may help it build on its plans for a fleet of autonomous vehicles that would remove the need for drivers altogether.