Connected objects security and big data purpose

In few years, all our daily objects we use will become connected, fridge, oven, bed, brush teeth...imagine all the data those objects can collect on your personal life ; what do you eat, how much time in the day, your health evolution daily, when you sleep, how do you sleep...too many informations, a server will know you better than you...

Pretty good if it's for your personal use, but what happen if this data is hacked, or companies that develop those connected objects use it for marketing, how can we sell you more things ?!

Privacy versus security ?! Or privacy and security ?

So big data and security of sure operates pair and uninformed users in the middle...