Researchers say that the door of a strange car can be unlocked in a few minutes by wireless transmitters, leaving no traces.
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For today's car thieves, traditional hangers and fixed blades are already stealing tools of the last century, because for masters such as Qualys researcher Silvio Cesare, They can even unlock your door without touching the vehicle at all!
It is reported that Cesare will present a number of wireless transmitters in the Black Hat Security Conference in Las Vegas this week that will allow others to leave no physical traces. The technology to unlock the door of a strange car in minutes.
"I can unlock and unlock the car through it. This technology can almost defeat the keyless entry system of all cars," said Australian researcher Cesarary.
Currently, the unlocking device used by Cesarary is assembled from ready-to-sell parts, for a total price of around $1,000. However, in the "handling" part of the model, the technology of the Cesare may require the car thief to stay in the car wireless range for two hours to complete the unlock. However, Cesare said that the cost of implementing these devices in the future may become lower and lower, which will likely enable more hackers with additional ulterior motives to further optimize the cracking technology and even find other vulnerabilities related to wireless signals in existing systems. .
Sesari pointed out that most automakers today tend to use many of the car's universal electronic keys, and the largest producers of such electronic keys include TRW Automotive Holdings Corp., a pioneer in automotive safety systems. Leader, one of the world's top ten auto parts suppliers) and Atmel these companies.
In an interview with the US technology media "Connect", Cesarui specifically asked the other party not to point out the name of their successful test model. At the same time, he also teamed up with the Australian chapter of the Computer Emergency Response Team to inform the car manufacturer.
“This is a very popular model. There are at least two identical models on my own community road,†said Cesare.
According to Wired, Cesare uses a software called "Software-Defined Radio" (SDR), which can transmit or intercept signals from FM, Bluetooth or Wifi. After the signal is output through the antenna and amplifier, the tool can emit the same unlock signal as the car key. Of course, since this method uses "violent unlocking" (that is, by unlocking 2-3 signal frequencies per second), the unlocking time of this method can sometimes be as long as several hours.
"If someone's car is parked in the parking lot for a night, this kind of thing is entirely possible. Moreover, after the vehicle is successfully invaded by this method, the owner can only find it through the failure of the car key, and then the owner needs to press at the same time. The number of buttons for getting off the keys can be matched again with the vehicle,†said Sesari.
Cesarari also found that some models can be unlocked multiple times at the same frequency (in theory, the frequency of each unlock will be adjusted), which may be due to the back door preset by the car manufacturer in the unlocking system. . Currently, Sesari is still investigating how many car manufacturers have preset similar backdoors in the unlocking system.
Of course, this method discovered by Cesar has its own limitation, that is, the car thief needs to first determine the approximate frequency range of the target vehicle unlocking signal, which requires them to first intercept the unlocking signal of the owner, so Saray recommends that car owners can minimize the risk of car theft by avoiding the use of remote unlocking in public.
In fact, Cesare is far from the first researcher trying to unlock a vehicle with a wireless signal. Three years ago, a Swiss researcher unlocked the vehicle by copying the remote key frequency of the owner and transmitting signals through the antenna, and even remotely started the vehicle.
"For the world, this is a new field of hacking. As more and more devices can be modified, eavesdropped, and spoofed, we will see more and more similar security issues in the future." Rui finally said.
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