"Mother-child program? What does it mean?" Zhou Fei asked in confusion.

"The parent program contains a subroutine in the parent program. I just analyzed the parent program, but I didn't expect there was a subroutine in it. In fact, the parent program is easy to crack. I remember I said that this program is not complicated, but now it is different. Once a subroutine appears, it means that I must crack two programs at the same time, and there is no time difference. According to my analysis, this subroutine should be an insertion program."

"Insert the program? Let's talk about it more specifically." Zhou Fei was a little troubled and didn't know what it meant.

"Inserting a program means that it will insert something on the original program. It may be a plug-in, a piece of code, another program, or a virus. But what I am most worried about now is that this insertion program will serve as a medium to let a hacker participate, that is, inserting a hacker's id to fight me. This is the most troublesome. I not only have to deal with the attack of this hacker, but also crack the parent program. Only by cracking the parent program and defeating the hacker involved can I track the IP of the signal source. Others are not allowed to intervene during this process." Yan Sen even had the desire to die. Should he be so shameless?

"Didn't you say you want to crack two programs at the same time? How can you crack the parent program at the same time while defeating the hacker?" Zhou Fei asked.

"Inserting the hacker id is a very special situation. It can be said that the hacker involved replaces the role of the subroutine, just like role fusion, the hacker is the subroutine, and the subroutine is the hacker." In order to make Zhou Fei understand, Yan Sen gave the simplest example.

"Then are you going to give up now?" Zhou Fei put his hand on Yan Sen's shoulder and said seriously.

"No, I am a policeman, it is my responsibility. If I give up when I encounter any difficulties, then I don't deserve to be a policeman." Yan Sen grinned with a serious expression.

"Okay! Then continue your work." Zhou Fei pointed to the computer in front of Yan Sen.

"Yes." Yan Sen's hands began to dance on the keyboard again.

At the same time, some men wearing baseball caps, black masks and black windbreakers suddenly appeared on the street. At first glance, there were about twelve people. A man who was choosing accessories at a roadside jewelry stall saw this scene, put down a necklace in his hand, walked to the side, and whispered to the electronic device on his collar: "021 Call Command Room, 021 Call Command Room."

His call came from Zhou Fei's headset through the device.

"The command room has received it, please speak 021, and it's over." Zhou Fei responded immediately.

"Suspicious people suddenly appeared on the street, with no less than twelve people, all of them in uniform outfits. Judging from the direction they were moving forward, the target was the cafe. Please indicate it, and it was finished."

Zhou Fei listened to the sound in the headset and immediately walked towards the window and looked at the street. Sure enough, there were a group of men wearing baseball caps and black trench coats walking towards the cafe.

Zhou Fei changed his mind quickly and was considering the response method, while 021 was also waiting patiently.

After a moment, Zhou Fei had a plan in his mind and ordered: "Don't intercept, 021,022,023,024. If this group of people enter the cafe, you can also go in with them to protect the safety of Deputy Director Liu. If they make any moves, notify me immediately. I will arrange for a sniper to assist you in protecting you. Receive the reply and it's over."

“021 received, finished.”

“022 received, finished.”

“023 received, finished.”

“024 received, finished.”

Accompanied by Zhou Fei's order, four irrelevant men on the street acted at the same time and followed the group of suspicious people to the cafe. Of course, they did not clump together, but instead distanced themselves from each other and went to the cafe.

As expected by Zhou Fei, the group of suspicious people entered the cafe directly, and four plainclothes followed closely. After finding a favorable position in the cafe, they formed a protective circle with the previous 020.

After Zhou Fei saw the suspicious person entering the cafe from the window, he continued to issue instructions: "s1, s2, pay close attention to the movements in the cafe, wait for the order, and it is finished."

“S1 received, finished.”

“S2 received, finished.”

"Yan Sen, what's the situation?" After giving the order, Zhou Fei asked Yan Sen again.

"I'm trying to crack it, but the subroutine has been started. According to the code format, it should be an id intrusion. It can be basically confirmed that the subroutine exists in a hacker medium. What we are most worried about is still happening."

"Don't be nervous, just do your best." Zhou Fei comforted.

"I have successfully invaded, and I have already fought with him. Judging from the initial collision, this person's strength is no less than mine, so I'm in trouble now."

"There are not many hackers in the country who are comparable to you, right? There should be no more than twenty, right?" Zhou Fei knew how much Yan Sen's computer technology reached. He was specially recruited by the provincial department because of his superb skills. You should know that there is only one in the province.

"There are people outside of people, and there is heaven outside of heaven. I dare not answer this. There are too many experts. But now the other party is trying to conduct counter-tracking. I am building a defense. You also know that I was specially recruited because of my strength in defense. This hacker is just the opposite. He is very powerful in attacks, stronger than me. Now it depends on whether his attack is stronger than my defense or my defense is stronger than his attack. I don't look at it from his methods-"

Speaking of this, Yan Sen paused, and Zhou Fei hurriedly urged: "What's wrong with his technique? Can you finish it at once?"

Yan Sen smiled angrily and continued: "From his technique, he looks very much like someone I know."

"who?"

"My college classmate, He Shiqiang."

"He Shiqiang? Why have you never heard you mention it?" Zhou Fei said in confusion.

"Haha, you may not remember his name and team leader, but when it comes to his nickname in the hacking world, it is very famous." Yan Sen did not answer this question and continued.

"Oh? Tell me." Zhou Fei didn't ask. Everyone has their own secrets, and Zhou Fei also has them, right?

"He is called a thorn in the hacker world, and the meaning is that he is mysterious, without a trace, and is extremely aggressive, like a sharp thorn, without a firewall that he cannot break."

"Strange Thorn? Seven years ago, the Technical Reconnaissance Department tracked the Strange Thorn that had been fruitless for three years?" Zhou Fei said in surprise. You must know that the Provincial Department Database was broken that, and the Technical Reconnaissance was helpless. Later, it made the other party leave casually, and could not even find any trace. At that time, the provincial department was very angry.

"Yes, it's him."

(End of this chapter)
Chapter completed!