Entering the 'house of hacking horrors'
18 August 2014 Last updated at 08:52 BST
From smart light bulbs to fridges, thermostats and cars, everyday objects are increasingly being connected to the internet.
But despite the convenience of the "internet of things", if a hacker is able to access your home network, they could take over any connected device and control what it does.
We approached BMW for a comment on the car hack featured in this video and are still awaiting a response.
BBC Click's LJ Rich meets the people who are paid by companies to test for security flaws and help stop the hackers getting in.