“You can get a special discount if you are using Samsung Galaxy A5.” When I saw this advertisement on my Facebook News Feed at first, I thought I was lucky because I was the user! After I saw similar advertisements, however, I realized that companies knew my device information. I wondered how my information was offered to the companies for marketing. Did Facebook take my information illegally? Maybe they did not. I might have agreed to give the information when I signed up for a membership. But the problem is here: Facebook did not make me recognize the fact my information is given to these specific companies, when and for what. With just a one-time agreement, Facebook has used my information arbitrarily. Nowadays, this kind of misuse of personal information prevails online. Our information is extracted unceasingly without awareness and sent from here to there on the internet. And the challenge is going to be greater in this age of the fourth industrial revolution, where everything is connected via the internet.
