"Hasbro, manufacturer of the Furby, took issue with Which?'s test. It said: "We believe that [hacking into the toy] would require close proximity to the toy, and that there are a number of very specific conditions that would all need to be satisfied in order to achieve the result described.""
Well, under a certain condition of it being night time, me being out of the house, there being a power cut, someone with a brick could gain access to my house. But I still invest in security for the house to mitigate that issue.
Because that's common sense.