What information can the network supervisor detect?

Main monitoring: the location of call records, SMS, WeChat, QQ, and cell phone signals (accurate positioning through base stations, signal cars, etc. , the error is within one meter) and other content can be monitored by the police, and your online record will also be monitored. The public security organs have two departments to do these things, one is technical investigation and the other is network supervision. Technical investigation means is technical investigation means. Technical investigation means refers to the proprietary technology, methods, means and measures that are secretly adopted by professionals through special procedures in order to obtain all kinds of intelligence, information and materials related to criminal cases in the investigation of various criminal cases. Public security organs generally monitor mobile phones in the following ways:

1. When the suspect's mobile phone number is known, use professional monitoring equipment to intercept all the phone records and short message records of the suspect, and track and locate the transmitting position of his mobile phone signal.

2. Implant a virus or micro device in the mobile phone to get the contact information of all suspects.

3. Invade the suspect's mobile phone through wifi.

Satellite positioning locked the suspect's position.

legal ground

Article 150 of the Criminal Procedure Law of People's Republic of China (PRC), the public security organ may, after filing a case, take technical investigation measures against crimes endangering national security, terrorist activities, organized crimes of underworld nature, major drug crimes or other crimes seriously endangering society after strict approval procedures according to the needs of investigating crimes. After filing a case, the people's procuratorate may, according to the needs of investigating crimes and through strict approval procedures, take technical investigation measures and hand them over to the relevant authorities for execution in accordance with regulations. To hunt down a criminal suspect or defendant who is wanted at large or whose arrest has been approved, the necessary technical investigation measures may be taken upon approval.