Another 37 percent of the respondents said they are "moderately concerned" about the same issues, and nearly a quarter are "slightly concerned." The online survey polled 1,600 motorists in the U.S., Australia and the U.K.
The results echo many of the comments by Daimler shareholders during the company's annual meeting in Berlin earlier this week. Dieter Zetsche, chairman of the company's board of management and head of the Mercedes-Benz car group, told shareholders that Daimler was acutely aware of the problems related to data theft—but he insisted the company is taking every step it can to protect the privacy of its customers everywhere in the world.
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Daimler's answer to the threat included a heavy investment in a security system and protection, he said.
Other automakers, such Ford Motor, have also said they are actively working on protecting the privacy of any motorist using its vehicles. Ford came under intense scrutiny several months back, after its global marketing chief, Jim Farley, said during a speech at the annual Consumer Electronics Show that Ford's technology can collect and store a broad array of data about its customers.
Independent studies conducted by the U.S. Department of Transportation have also indicated that automobiles are susceptible to hacking. The problem could grow more serious as manufacturers add more capabilities to their cars—including the ability to reprogram engine control systems to correct software problems.
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Meanwhile, a growing number of makers, including General Motors and Hyundai, now offer remote start and remote door unlocking features, which could become the target of hackers.