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Why you should wrap your key fob in foil

Given that the best way to store your car keys at night is by putting them in a coffee can, what鈥檚 an ex-FBI agent鈥檚 advice to protect cars from theft during the day? Wrap car fobs in aluminum foil.
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Key fob will open and lock a vehicle in an instant. ItÕs not only a convenience but also an anti-theft device.

Given that the best way to store your car keys at night is by putting them in a coffee can, what鈥檚 an ex-FBI agent鈥檚 advice to protect cars from theft during the day?

Wrap car fobs in aluminum foil.

鈥淎lthough it鈥檚 not ideal, it is the most inexpensive way,鈥 said Holly Hubert, a cybersecurity expert who retired in 2017 from the FBI in Buffalo, New York. 鈥淭he cyber threat is so dynamic and ever-changing, it鈥檚 hard for consumers to keep up.鈥

Now, as CEO of GlobalSecurityIQ, she suggests clients go online and spend a few dollars and buy what鈥檚 called a Faraday bag to shield the fob signal from potential theft. Imagine a traditional sandwich bag made of foil instead of plastic.

Thing is, the car is always waiting for the fob signal. Thieves can buy legitimate devices that amplify the fob signal sitting unprotected in a purse, a pocket, on a counter at home or even just copy the code to access the vehicle.

Copying code from key fobs isn鈥檛 difficult. And this is something the auto industry and insurance companies are monitoring closely.

The cheap (or homemade) metal protection covers, named for the scientist who figured out how to block an electromagnetic field, can prevent thieves from having access to vehicles with a wireless fob. Currently, thieves can capture fob signals from outside a home, office or hotel room.

鈥淵ou know it works if you can鈥檛 unlock a car door when the fob is inside,鈥 said Moshe Shlisel, CEO of GuardKnox Cyber Technologies and a veteran of the Israeli Air Force who helped develop cyber protection for fighter jets and missile-defence systems.

鈥淭he credit card holders don鈥檛 work because they鈥檙e essentially a net rather than a wall.鈥

He visited Detroit recently to meet with automakers. He鈥檚 already working with Daimler on Mercedes-Benz vehicles and the Volkswagen Group on Porsche, Audi and Volkswagen products to聽protect them from hackers. Other clients and potential clients have asked to remain confidential.

Shlisel showed a new video of his company鈥檚 engineers taking control of a semi-truck through the use of a cellphone. Numerous videos have been posted online to illustrate that vulnerability is an industrywide problem.

He held up his fob and said: 鈥淭his should be something we don鈥檛 need to wrap with foil. It鈥檚 2018. Car companies need to find a way so no one can replicate the messages and the communication between the key and the vehicle.鈥

At home, Shlisel puts his key fob in a can with foil around it to add another layer. In his pocket, he carries the fob for his 2017 Ford F-150 in a little pouch that is made of fabric on the outside and foil inside.

Cybersecurity experts say privately that anyone who knows anything about the ease of auto and personal data hacking practises safe fob storage.

Clifford Neuman, director of the USC Center for Computer Systems Security in Los Angeles, pointed to the millions of consumers who now carry their credit cards in a protective pocket designed to work as a Faraday cage.

鈥淲e鈥檙e talking about electronic burglary tools or car theft tools,鈥 he said. 鈥淵ou go up to a house with a car parked in front of it, detect a fob 10 feet away in a bedroom and it allows the car to be unlocked. As these devices become more available, this scenario becomes more and more likely.鈥

Neuman added: 鈥淐ars used to be hot-wired. That used to be common, but was an accepted risk. This will become a new technique used by criminals. How much you are concerned, and what you do about it, is a matter of risk management.鈥

People who store their fobs in Faraday cages aren鈥檛 paranoid, experts say.

Jay Beckerman doesn鈥檛 want to wrap his key fob in aluminum foil before leaving home, but he says he is learning that maybe it鈥檚 a good idea.

After reading an article in May聽about cybersecurity experts not going to bed before stashing their car 鈥渒eys鈥 in metal coffee cans to prevent theft, the retired journalist, from Phoenixville, Pennsylvania, wrote to say: 鈥淚 can鈥檛 carry my keys in a metal can during the day. What do I do?鈥

He went on: 鈥淚 bought a Samsonite RFID pouch from Staples, put my fob wholly in the pouch, stood about 10 feet from my car, a 2004 Audi A6, and pressed the buttons from the outside. But the聽lock and unlock buttons worked, lights went on and off. Same with a 2013 A4. Not the desired outcome to foil a miscreant snooper. Though they might fit in a purse, Altoid cans probably aren鈥檛 deep enough and wouldn鈥檛 work in a pants pocket. Band-Aids don鈥檛 come in small cans anymore.鈥

Shlisel said at the time: 鈥淭he best thing you can do is keep your key in a small tin can wrapped with aluminum foil. But in a purse or pocket, just aluminum foil will do the job.鈥

Beckerman was one of many readers who called or emailed the Free Press saying they wanted to learn more.

This is the reality of a wireless, connected world where car doors lock with a click and a chirp, where children in the back seat stream videos and companies can update software technology remotely.

While auto industry engineers know a lot about traditional safety, quality, compliance and reliability challenges, cyber is an 鈥渁daptive adversary,鈥 said Faye Francy, executive director of the nonprofit Automotive Information Sharing and Analysis Center, which specializes in cybersecurity strategies.

鈥淎utomakers are starting to implement security features in every stage of design and manufacturing,鈥 she said. 鈥淭his includes the key fob.鈥

Marketing executive Mark Hackel is still trying to figure out what happened to the 2016 Ford Explorer parked in his driveway at home. Surveillance cameras recorded a thief approaching his vehicle around 4:20 a.m. on the last Saturday in May. It was parked close to his home, which had the exterior lights shining brightly.

Hackel always locks the car door when he comes home. And he remembers doing so this time, too.

鈥淚t would look like daylight on my driveway,鈥 Hackel said. 鈥淎nd there鈥檚 a streetlight in front of my house. I play back this video and see a guy creeping up alongside my house. It shocked me because of how well lit it was and the proximity to my house. I couldn鈥檛 see anything in his hands but he had something that unlocked the car doors. I watched the interior and exterior lights went on and he opened the door.鈥

The thief spent time going through the vehicle and ended up stealing a .40-calibre Glock and gift cards. Hackel鈥檚 wife鈥檚 car was entered, too.

At the time, Macomb County police Sgt. Eric Ehrler told the Free Press that three vehicles were broken into in Hackel鈥檚 neighbourhood.

Hackel said that some type of new remote opening device was used to unlock the vehicle.

Macomb County Sheriff Anthony Wickersham said this week the case is still under investigation.