Awareness of IT security measures among internet users in the UK 2015, by user type

* The original survey question was: "Before today, which, if any, of the following online security measures or safety features had you heard of? And which if any, of those measures or features do you have or use on any of the devices you use to go online at home?"
** n (started using the internet under 5 years ago) = 175; n (started using the internet 5+ years ago) = 1,155.