When you take a picture of Zhang Xuanfu's diamond ring at home, and then upload it to your Weibo or circle of friends, then things may not be as simple as you want to show off. The photo you share is not a simple photo, it is still hidden With a lot of information, such as when the photo was taken, the model of the camera or mobile phone, and the latitude and longitude of the place where the photo was taken. So when this photo is posted on the Internet, for a thief familiar with technology, you are a clear target that does not require stepping on the point. The sharing of "go to the movies today or where to travel tomorrow" was published to further guide when the thief can steal. What cannot be derived from this text is:. ['Criminals may use big data analysis to commit crimes.', 'Personal information leakage mainly occurs on online social platforms.', 'Showing off wealth on online social platforms is likely to reveal privacy.', 'Public-oriented information security education needs attention.']