On the afternoon of August 7th, 20 16, I got a call from the Criminal Investigation Brigade of Jiading District Public Security Bureau in Shanghai, saying

Today, I also received this kind of phone call from the post office to the public security bureau, saying that I set up a phone call at Jiading District Telecom on June 5, and then transferred it to the public security bureau to report the case, and later asked me to take phone records. Then they inquired about my information and my bank card' deposit', and I paid 1000 yuan, and later' said' something similar, which scared me. I just want to say, how did my information leak? Including the address of my hometown.