Maker of hacked radio says system is unique to Fiat Chrysler

The company that makes car radios that friendly hackers exploited to take control of a Jeep Cherokee says its other infotainment systems don't have the same security flaw.
Harman International CEO Dinesh Paliwal said Tuesday that the hackers used a cellular connection to get to the radio, which they used to control critical functions such as brakes and steering.
The hack by Twitter security expert Charlie Miller and Chris Valasek, who heads auto security for a consulting firm, touched off the recall of 1.4 million vehicles from Fiat Chrysler to patch software holes. On Saturday, the government announced that it would investigate the Harman Kardon radios to see which other manufacturers use them and whether they had the same vulnerabilities.