Ivan Flechais and Jason Nurse are looking into how people think about securing the internet-enabled devices in their homes.  They are currently running a study on usability and security, open to the general public:

http://www.cs.ox.ac.uk/usersecstudy/

“Specifically, our aim is to develop a better understanding of the main concerns regarding the perception and use of computer security features, and to identify key aspects that drive and support security there.”