Learn more about what the data from your smart devices reveals about your sleep schedule, TV binges and even your tooth-brushing habits -- and how tech companies could use it to target and profile you.
1:30 Blackhat Security Conference update. 11:12 About Infowars and freedom of speech. 26:11 The extent of Chinese trade tariffs on technology products. 32:24 Hands on with the latest Galaxy Note 9 smartphone.
A TODAY national investigative correspondent digs into whether your smartphone and other devices could be monitoring you, separating fact from fiction and giving step-by-step guides on how to protect your privacy.