Early the next morning, as soon as Liu Chen went to work, Liu Xiao walked in with two dark circles under his eyes.

"Why did you come here?" asked Liu Chen with a smile.

"It's over!" Liu Xiao didn't wait for Liu Chen's instructions, he first found a chair to sit down, stayed up all night, and was a little tired, "That case of yours, I'm done!"

"It's over?" Liu Chen was a little puzzled, he didn't know what he meant for a while, whether the case was solved or the case was messed up.

Liu Xiao kicked out, "I figured it out all night last night, and I finally figured it out." In your case, the revision of grades and the production and sale of fake certificates were basically done by that little tail wolf. ”

"You figured it out so quickly?" Liu Chen was taken aback, this Liu Xiao's speed was too fast, it had only been two days since Feng Ming, Liu Chen got up and poured Liu Xiao a glass of water, "You tell me in detail." ”

"In fact, this thing can be regarded as two people doing it together, one is the little tail wolf, and the other is called'Black Hawk', these two are fellow villagers and classmates, after graduating from high school, the little tail wolf went to the provincial capital to work, Black Eagle came to Fengming City to go to college, and the two often contacted online. Liu Xiao took a sip of water, "I don't know why, Black Eagle failed two subjects in college, and he was in the same class as me, so he was facing the situation of not being able to graduate." In desperation, Black Eagle used his relatively good hacking technology to hack into the school's grade system, successfully modified his grades, and then graduated successfully!"

"You mean, the school's grade system was hacked a few months ago?" Liu Chen was a little surprised.

"That's right!" Liu Xiao nodded, "Probably because of his weak heart, he has never mentioned the matter of Black Eagle's revision of his grades." After leaving school, Black Hawk went to work in a company in the provincial capital, and once had dinner with the little tail wolf, maybe he drank too much, so he leaked about it. The little tail wolf has been in the provincial capital for four years, and he has never made a difference, and he is still thinking about making a lot of money, and he immediately smells the value of this......"

"Wait!" Liu Chen interrupted Liu Xiao's words, "Why do you always have so many 'probably' and 'but'? Can you be a little more accurate!"

"I can't be precise!" Liu Xiao frowned, "I stole the other party's chat records, and there are some accounts, and I guessed the original face of the matter based on these things, which should be eight or nine!"

"Okay, good!" Liu Chen couldn't laugh a little, "Then you can continue to talk about your speculation!"

"Then what else is there to say, isn't it all obvious!" Liu Xiao glared, "Black Hawk didn't stand up to the instigation of the little tail wolf, and attacked again, using the same means and methods, to hack the server of Fengming University again, this time he directly copied all the student materials." There are various contact information of students in the student's file, and the two find those students who have missed classes in the information, and then contact them privately, and once the negotiation is completed, the Black Eagle will revise the grades. ”

"What's the deal with the fake certificate?" Liu Chen asked rhetorically.

"Once you change your grades, Black Wing has to hack into the school's server once, and even if you are familiar with it, you may be caught. Liu Xiao glanced at Liu Chen, couldn't he still understand such a simple question, and continued: "After a long time, Black Eagle's heart became a little uneasy, and he wanted to stop. ”

"Do you understand?" Liu Xiao stared at Liu Chen, "The contradiction is coming, the black eagle wants to stop, but the little tail wolf has just made some money, he doesn't want to stop, but he doesn't know hacking skills, and he can't modify the students' grades." ”

"Say, keep talking!" Liu Chen finally heard something.

"So the two of them tore their faces!" Liu Xiao paused, pinched his chin and said: "That's my estimate, the little tail wolf may have used the past to blackmail Black Hawk at that time, hoping that Black Hawk would continue to do it, but Black Hawk was very resolute, and finally the two reached an agreement, if Black Hawk took the student information of several other colleges and universities in the province and handed it over to Little Tail Wolf, Little Tail Wolf agreed to part ways, so there was a theft of student files from several other schools." ”

"Then why are the grades of several other schools also being revised?" Liu Chen asked Liu Xiao with a smile.

"Has it really been modified?" Liu Xiao asked rhetorically, then frowned, and said, "Shouldn't it, could it be that Black Hawk was forced to make a few more orders? Or is there another hacker like Black Hawk who couldn't graduate, so he easily revised his grades? You didn't pay attention to it before, but now after Feng Ming has this incident, the school has carefully checked and found out?" Liu Xiao asked several rhetorical questions in a row, because he didn't find these in the chat records of Little Tail Wolf and Black Hawk, and after Black Eagle handed over the student files of several other schools to Little Tail Wolf, the two had no contact.

Liu Xiao smiled, "Okay, let's not talk about this, what's the real number on that fake certificate? Since the little tail wolf doesn't know hacking skills, how can he get the real number from the website of the Ministry of Education?"

"Cough~" Liu Xiao sighed, "Don't mention it, I also pondered it all night, and I just figured it out before I came to you!"

"Tell me, what's going on?" Liu Chen urged.

"Originally, I couldn't figure it out, but in the morning, the guy who sold the certificate suddenly sent me a message, saying that the certificate was ready, and I asked to see the sample, and he took a video photo of the graduation certificate and sent it over, and then I finally understood!" Liu Xiao smiled and took out a piece of paper, which was the one he copied back from school yesterday, and pointed to one place: "See? There is a letter code here, and the number behind it is the number of the graduation certificate." ”

"This is the number of the graduation certificate?" Liu Chen was greatly surprised, a little unconvinced.

"That's right, that's why the little tail wolf finally agreed to part ways with Black Hawk!" Liu Xiao touched his chin proudly, "This little tail wolf is really a talent, he found out!"

"What the hell is it?" Liu Chen was a little anxious to know the answer.

"The graduation certificate number I saw on the sample of the fake certificate that the guy gave me was exactly the same as the number on this paper, and I understood it a little at that time, so I went to the website of the Ministry of Education to check it, and the result was that I entered this number, and I really found the student's information. When I'm done, I'll enter this kind of number on other students' materials, and I can find it all!" Liu Xiao paused and made a final conclusion. So I came to a conclusion that all college students who belong to the national unified recruitment part, from the moment they are admitted, their information is entered into the database of the Ministry of Education, and each person is bound to a graduation number, if the four-year academic period expires, the student does not graduate normally, after completing the verification procedures, the Ministry of Education will revoke the student's number, which is probably for their own convenience, and as a result, this process was caught by the little tail wolf. ”

"So that's the case!" Liu Chen suddenly realized, she didn't expect that the truth would be like this.

"Because the students don't have access to these files of their own, no one will know this secret!" Liu Xiao shook his head, "But when these materials were in the hands of the little tail wolf, he quickly discovered the secret, and then agreed to break up with Black Hawk." A fake is a fake, these fake certificates can only be fooled for a while, and once the Ministry of Education cancels these numbers, he will be a piece of waste paper!"

Liu Xiao remembered Xiao Wu's cousin at this time, the certificate he bought, the validity period is two years, two years later, the Ministry of Education verified that this person did not graduate, and the number can no longer be found on the website of the Ministry of Education, I don't know what Xiao Wu's cousin will do at that time, Liu Xiao stood there and sighed.

"What a sigh!" Liu Chen pushed him, "What about those chat records and accounts, as well as the location of the other party!"

Liu Xiao took out a USB flash drive, "It's all here, you can verify it! I'll go outside and make a call, if there is a problem, you can call me again." Liu Xiao put the USB flash drive on the table in front of Liu Chen, turned around and walked out of the door of the office of the Internet Supervision Brigade, ready to find a secluded place in the corridor to make a call, he had to ask Zhang Chunsheng if he had found out Zhang Xiaohua's whereabouts.

As soon as Liu Xiao went out on the front foot, three policemen came up downstairs, led by one person in front, and entered the office of the Internet Supervision Brigade!

After the phone rang for a long time, Zhang Chunsheng picked it up, listening to the tone of his voice, it seemed that he had just woken up, "Hey, it's Liu Xiao!"

"It's me!" Liu Xiao went straight to the point, "Did you find out Xiaohua's whereabouts?"

"It's very likely!" Zhang Chunsheng didn't give an accurate answer, "The door of the office of the cycling group is locked, and the people from the art school said that no one has entered or left for more than a week, so I asked someone to smash the door open, and found several documents inside, including the date of their southward departure, the list of personnel, and the route map, the date of departure coincides with the date of Shanshan's disappearance, but there is no Zhang Xiaohua in the list, only a person named Shanshan, I guess it is." ”

"That's for sure!" Liu Xiao couldn't help but be excited, and now he finally knew Zhang Xiaohua's whereabouts, "Did you find the contact information of the person in charge of the cycling group?"

"I didn't find it!" Zhang Chunsheng sighed, "I searched through the house, but I couldn't find the contact information." But now that I've set off, along with a few other passers-by, we'll follow the travel map of the cycling group to the south, which is the bifurcating route, and I've sent people to inquire and look along the way, and we'll definitely find the cycling group!"

"Oh, this is also a way, the goal of the cycling group is so big, many people must have seen it!" Liu Xiao's excitement immediately decreased by half, what is going on, knowing that Zhang Xiaohua ran away with the cycling group, but he couldn't contact the cycling group, it was really torturous.

"Well, now that it's dawning, it's easier to find, I believe there will be news soon!" Zhang Chunsheng was about to hang up the phone, "Okay, I won't tell you, I'll contact a few other passers-by to see if there is any news!"

"If there is news, you must notify me!" Liu Xiao instructed.

"Okay, got it!"

"Be careful on the road!" Before Liu Xiao finished his instructions, Zhang Chunsheng hung up the phone, Liu Xiao put away the phone sullenly, stood on the corridor and was distracted, praying in his heart that Zhang Chunsheng would find Zhang Xiaohua as soon as possible.

In the office of the Internet Supervision Brigade over there, Liu Chen picked up the USB flash drive, and just as he was about to get up and go to the computer, three colleagues came in.

"Team Liu, you're busy!" the policeman in front greeted with a smile.

"Wang Ju, why are you free!" Liu Chen had to put down the USB flash drive in his hand and greeted him.

"It's the deputy bureau, the deputy bureau, remember it later!" Deputy Bureau Wang still listened to the humor, turned around and pointed to the two policemen behind him, "Let me introduce you, these two colleagues are from Haicheng, they came this time because there is a big case and want us to help, Team Liu, you must fully cooperate with the work of your colleagues in Haicheng." ”

"Yes!" Liu Chen stood upright, and then stretched out his hand to the two colleagues from Haicheng, "I'm Liu Chen, the person in charge of the network supervision team, please take a seat." ”

"Okay, then you talk, I'll go down first!" Deputy Bureau Wang left after speaking, and when he saw Liu Chen about to follow, he waved his hand and said, "Don't send it, the case is important!"

Liu Chen had no choice but to sit down and said, "Then please tell the two of you about the case!"

The two Haicheng policemen glanced at each other, and then a white-faced policeman began to take something out of his briefcase, and said: "Actually, this case Captain Liu should be very familiar with, it is the case of the Haicheng network exercise not long ago. ”

"Oh?" Liu Chen was a little surprised, "Wasn't the case shelved because there were no clues?" Liu Xiao said this, it was to give face to the two policemen, and everyone who participated in the exercise knew that it was shelved because of differences of opinion between the technical side and the administrative side.

"That's the case, we received a report from the masses yesterday, and now we have basically locked the suspect target, this time, I just want Team Liu to help us check this person's information, and by the way, see if we can confirm this person's current location through technical means!" The man opened the folder and pushed it to Liu Chen.

Liu Chen didn't look at the documents, but said with a smile: "Why do you want to go to Fengming to investigate, besides, if you want technical tracking, Haicheng's network supervisor can do it!" Liu Chen had to ask clearly, he couldn't rashly agree, in case the two parties on Haicheng's side were still arguing, his interference was obviously crossing the jurisdiction, it was a slap in the face of Haicheng's network supervisor, she didn't do this kind of thing!

The faces of the two Haicheng policemen immediately froze, it seems that Liu Chen really guessed correctly, the network supervisor of Haicheng is estimated to not take over this matter, and the opinions of the two parties should not have reached an agreement. However, the white-faced policeman quickly said: "Hehe, that's the case, Team Liu, because the suspect we locked up, he is from Fengming City, according to the information, this person has been in college in Fengming for four years, and we think about what records or files he should leave with you." We all know that you are the famous Bai Xiaosheng in this circle, and you won't know that there is such a demon king in your territory. ”

Liu Chen smiled, it seems that these two guys have done a lot of work before they came, and they have studied themselves quite well, and said at the moment: " Of course, if you want to come over to access the information, as long as you perform the normal procedures, I can provide all the information provided, but the matter of tracking the suspect, you still have to discuss it with your own network supervisor, I don't dare to cross the authority, and we also have a few big cases here, and the manpower is really not available, even if I want to assist you in tracking, it is estimated that I will have to wait for ten days and a half months, it depends on God's face, I hope there will be no new cases at that time. ”

The white-faced policeman gritted his teeth and said, "Okay, let's do it, then let's talk about the situation of this suspect first." According to the information we have, the suspect's name is Liu Xiao, who graduated from Fengming University and now runs a ......"

"Liu Xiao?" Liu Chen immediately changed color, dragged the folder over and took a look, and the photo on it was Liu Xiao.

The white-faced policeman looked at Liu Chen's reaction, "Oh? It seems that Team Liu's name of 'Bai Xiaosheng' is really well-deserved, as soon as I mention the name, you will know who it is." Hehe, this Liu Xiao is currently running a studio in Haicheng, and we immediately searched where he lived after receiving the report, but the building was empty, and I wanted to check his details to see where this person might have escaped. ”

Liu Chen felt a big headache, and wanted to run away, so Liu Xiao didn't know that he was dragged to Fengming by himself, how could he have anything to do with escape, I really admired the level of the Haicheng police, people are not at home, they are afraid of crime and absconding. Liu Chen closed the file, "Okay, I know about this, I'll notify the two of you when I get news back!" Liu Chen can only deal with it like this at the moment, drag it out, and see how he can explain this matter clearly.

"Then please, Team Liu!" the two policemen stood up with a smile, "Then I'll wait for your good news!"

As soon as the two policemen turned around after speaking, Liu Xiao came in from outside, and said, "How is it?

The white-faced policeman was immediately dumbfounded, this person had seen it, his eyes were familiar, and he thought to himself, damn it, isn't this that Liu Xiao, so he spoke: "You ......"

"Xiao Zhang!" Liu Chen shouted violently at this time, "What are you still sitting there doing, go and arrange these two colleagues from Haicheng!"

The policeman on the side scratched his head and stood up, not knowing where his head was so angry today, he walked over and led the way in front, "Come with me!"

The two policemen from Haicheng were completely confused, and they didn't dare to speak indiscriminately, they didn't know what kind of medicine Liu Chen was selling in this gourd, obviously the suspect was in front of her, but she didn't mention it, did she cover it up? Or did she have other plans after stabilizing the suspect? In the end, the two chose to believe the latter, so they looked at Liu Xiao carefully, and then followed the Xiao Zhang policeman out.

Liu Xiao was a little puzzled, I don't know why this policeman stared at him so strangely, and as soon as the two left, Liu Xiao asked Liu Chen, "What's the matter with these two policemen?"