Xu Musheng was surprised to see Liu Changyuan. Liu Changyuan was the second-in-command in the company. Logically speaking, he would not stoop to the front line to check on the situation. The person who should be checking up on him should be Wan Qiang, the general manager of the operations and maintenance department. However, what surprised him even more was that three more people followed closely behind Liu Changyuan. Three policemen in uniforms and big hats!
Xu Musheng had been particularly fascinated by detectives for a while. In order to understand the level of the police, he had done special research on the ranks of the Chinese police. Judging from the style of the epaulets, the middle-aged man standing in the middle was a first-class police inspector, a cadre at the division level. The two young men standing on both sides of him, one was as thin as a monkey, and the other was tall and burly. They were both second-class superintendents, equivalent to deputy section chiefs.
Good heavens, the formation was not small! This was definitely not an inspection. Something must have happened!
As this thought flashed through his mind, Xu Musheng took the initiative to stand up and greet him,""President Liu!"
"You…are a new employee?" Liu Changyuan naturally did not recognize Xu Musheng. In his impression, the Jiangbei branch of China Unicom did not have such a young employee.
"My name is Xu Musheng. I'm a student at Jiangbei University of Science and Technology. I've been doing my internship here for the past six months.”Xu Musheng explained.
"Interns?" Liu Changyuan's expression turned ugly. "Why are you alone?"
"I was supposed to be on duty with another colleague. However, his stomach felt uncomfortable when he woke up in the morning. He should have asked for leave from President Wan."
Since it was not an inspection, Xu Musheng felt that he should be able to help Wang Huan fool him, so he did not even mention his name. It didn't matter if he was criticized. He could leave after his internship, but Wang Huan still wanted to work here. He couldn't ruin his impression in the leader's heart.
"Are you familiar with our system? Do you know how to check the data?" As expected, Liu Changyuan was not in the mood to investigate the situation.
"I have a number here." The middle-aged inspector said," 130xxxx7143, can you find out the name and location of the owner of this phone?”
Hearing this, Xu Musheng suddenly felt very strange. As far as he knew, according to the requirements of the Ministry of Public Security and the Ministry of Industry and Information Technology, the data of the main systems of the three major operators were synchronized to the provincial public security departments in real time. Checking the phone owner's information and location based on the number was the most basic function. The internal system of the police station should be able to check it. Why did they have to go to the computer room of China United Corporation? It seemed that the data of this number was not so easy to find!
Although he had already expected the result, Xu Musheng still opened the interface of the relevant system to inquire.
"Can't you find out the current location? Don't you know how to investigate? Why don't you quickly get an old employee to come over?”The middle-aged inspector was a little anxious. The latter part of his words was for Liu Changyuan to hear, and he did not care about Xu Musheng's feelings at all.
Liu Changyuan had already been informed that this was related to a big case. He didn't want the police to push the blame to China United, so he said,""You can't blame him. Oh, what's your name again?”
"Xu Musheng!"
"Yes, you can't blame Xiao Xu. It would be the same if it were anyone else. Our data is synchronized with your system. You can't find it on your side, so it's the same for us. The user had turned off his phone. There was really nothing he could do.”
"Try another one." The middle-aged inspector did not give up and reported the number 130XXXX4912.
Xu Musheng quickly called this number again, but it was also turned off and offline. "It's still an anonymous card. The last time you logged in was 11:11:17, coordinates xxxxxx.”
The middle-aged inspector frowned and said to Liu Changyuan,""President Liu, is there really no other way? This was an emergency, and the leaders in the hall were all watching.”
"I know, I know. Otherwise, you wouldn't have come personally. However, the user had turned off his phone, so there was no way to locate him. Although we are more professional, we can't go against the technical principles.”
The middle-aged inspector knew that Liu Changyuan was right, but he still grumbled,"The country has long demanded a real-name system. Why are there still cards that don't have a real name?”
In terms of administrative rank, Liu Changyuan was actually not lower than the other party, but at this time, he could only be careful. "The real-name registration system was implemented at the beginning of the year. The two numbers you just used were both 2G numbers and have been sold for several years.”
"Alright then, I'll have to trouble you." The middle-aged inspector did not have the time to pursue this matter. He called his two subordinates out with a black face.
"Wait a minute!" Xu Musheng, who had been typing on the keyboard, suddenly said,""Is it a blackmail case? The criminal used these two numbers to make a request?”
The middle-aged inspector turned around and stared at Xu Musheng. His long years of handling cases made his eyes and tone a little fierce. "Why do you think it's blackmail?"
What, the next number? The middle-aged inspector suddenly didn't understand.
"That means that the prisoner will call me using the number 130xxxx3.”
"Are you guessing blindly?" The middle-aged police officer could not believe it.
Liu Changyuan wasn't sure if this intern was really confident or if he wanted to show off in front of the leader. "Xiao Xu, the criminal turned off his phone. How did you check? Please don't let it be the previous data. In our line of communication, we have to be careful. If you're not confident, don't talk nonsense.”
This sentence was a clear reminder or warning to Xu Musheng that this was not the time for a small intern to be in the limelight!
"President Liu, I'm not talking nonsense. I really found out.”Xu Musheng took a sip of the cold coffee, and the strong bitterness made his mind clearer. "Every SIM card has a unique serial number called the IMSI. Every cell phone produced by a legitimate manufacturer also had a unique set of serial numbers called IMEI. When the user's mobile terminal is attached to the network, our system will record the matching relationship between the IMSI, IMEI, and mobile phone number, which is called the terminal triad. I'm sure you know this. When I checked these two phone numbers, I found that the IMEI corresponding to their last login was the same. In other words, these two SIM cards were installed in the same phone to access the Internet. And this phone is still online. There's a third card in it, which is the phone number I just reported.”
Xu Musheng was very confident in his judgment. However, from the looks of the three police officers and President Liu, it was obvious that they did not quite understand what he meant.
"Alright, you might understand better if I put it this way.”Xu Musheng took another big gulp of coffee and spoke in the tone he used to tutor his cousin. "I'm going to assume first that this is a blackmail case, where the culprit has to make several calls to the victim to make his demands. This criminal, I reckon he knows some information about the internet. He knew very well that if the victim called the police, the police could find out the owner's information and the location of the phone through the phone number. In order not to expose himself, he thought of a way. He deliberately bought a batch of anonymous phone cards and changed them after every call. This way, it would be difficult for the police to lock onto him based on his phone number. However, he still neglected a key point. Although he had changed the SIM card, he did not change the phone.”
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