According to a team of researchers from KU Leuven University, The Wire reported, a Tesla Model S key fob could be cloned with the help of several devices worth roughly $600, including a radio, a minicomputer, a pre-computed table of keys and some batteries. It was revealed that a hacker could read the signals from an owner's wireless key fob.
The researchers reported about the vulnerability last August. They reportedly received a "thank you" and a $10,000 bounty from the electric car giant, but Tesla didn't fix the bug until its June encryption upgrade and more recent PIN code addition.