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It wasn’t that long ago when it was only top of the range cars that had mobile Bluetooth connectivity which meant that the internal storage in the car would store all of your phone book. You, therefore, had to delete your phonebook if you didn’t want the new owner to have access to your list of family, friends and contacts.

Things have now moved on and even the most modest of cars has a pile of data stored about you. What Car has looked into this and come up with a list of things you can do to protect yourself from a cyber attack.

• Keep in touch with your car’s manufacturer regularly to check whether it has issued software updates or recalls to improve security. Alternatively, you can see if your car has an outstanding recall notice at gov.uk/check-vehicle-recall.

• To minimise the impact if your car and/or sat-nav is stolen, use any security features your sat-nav offers and think about regularly wiping all the data, such as your home address, from the system.

• If your car has built-in wi-fi, never leave the default password on it and never leave a note of the new password inside the car.

• Turn your car’s wi-fi and Bluetooth off when you’re not using them.

• If you download any smartphone apps that will be processing payments for your car, such as road toll fees, make sure they’re password-protected.

• Make sure your smartphone’s operating system and apps are the latest versions; updates are often issued to patch possible security vulnerabilities that can give cyber criminals access to your phone.

• Protect your social media accounts by making sure you’ve activated the privacy settings. With Facebook, avoid public updates and only send posts to your friends. With Twitter, you can’t be as selective.

• Protect your home by making your car’s sat-nav less accurate. If you don’t want cyber criminals to know where you live, instead of setting your home address to your house, consider setting the shortcut to a nearby junction or the closest motorway exit.

What to do if you’re selling your car or returning a hire car

• If you’ve paired your phone to the car to access hands-free operation, go into the Bluetooth set-up menu and remove your phone from the paired phones list, as well as deleting your contacts if they’ve been downloaded onto the system.

• Check the car’s manual to find out how to clear all your private data from the infotainment system. It might be listed as a ‘factory reset’ option.

• If your car has web-connected services that bring data from your favourite apps and social networks to the dashboard, disconnect this. If you don’t, other drivers might be able to gain access to your Facebook and Google accounts. To wipe the information, you’ll need to reset the infotainment system to its factory-fresh state.

• If your vehicle has an integrated remote control that you’ve paired with your front gate or garage door, your vehicle is essentially a gigantic key to your house. Check the instruction manuals for your electric gate or garage door for resetting instructions.

By Graham Hill