Guys, I was in some advanced electronics in the navy in the mid 80s. The Navy had a van they could park outside of a building and could decipher electronic type writers being used. Tempest, if I remember. Deceptive Electronics Countermeasures (DECM) was my gig.
Your smart tv, cable box all spy on you. We proved a tv turned off could be used to eavesdrop back then. Your speaker operates like a microphone and will generate a feed back from noise in the room.
All of this is considered "Big Data." Big data is distinguised from "small data" by the three Vs - volume, velocity and variability. All of the clicks you make on your computer are part of big data. All of your comments here, and on other websites, are considered big data. Any online shopping you do is part of big data. Artificial intelligence and machine learning are used to make sense of what you do and deliver content relevant to who you are and what you do. Relevant content includes advertising, political content, links to other websites, videos and more.
