In Osaka Prefecture, in an Internet cafe, Gao Yuan sat in a private room and sighed like this while looking at the dense codes on the computer screen.
A few days ago, after leaving the Lavender Villa, Gao Yuan remembered that he had been out for three days without even a change of clothes, so he bought two outfits in the mall and took the rail transit to Osaka.
I originally planned to repair in Osaka and see if I could meet Hattori Heiji. After all, cases in this world are always easy to happen around detectives. If I can take the opportunity to catch a few cases and trigger more settlement panels, check out this "plug-in".
“Whether there will be new things coming out is something I am very curious about and want to do.
Then I was passing by this Internet cafe and saw an announcement recruiting temporary workers.
It just so happened that Gao Yuan's cash was limited after spending the past few days, so a temporary job just met his actual needs.
Besides, in an Internet cafe, you can still access computers and surf the Internet, so I happen to have the need to go online to investigate some things.
This Internet cafe has a regular employee who is responsible for maintaining the network and cannot come to work because he was injured not long ago. Recently, the network in the store has been experiencing frequent problems, so it is temporarily looking for a temporary worker who can complete this work.
Come and temporarily fill that employee's position.
It just so happened that Gao Yuan's major in graduate school was information security, so he was certainly qualified for network maintenance work, so Gao Yuan naturally became a temporary worker in this Internet cafe.
Originally, he was only responsible for the work during the absence of the regular employee, and the store manager did not carefully check Gao Yuan's identity. After all, it was not easy to find a person who was qualified for the job.
After examining Gao Yuan's ability, the two parties agreed on the daily salary and provided a private room as Gao Yuan's accommodation during his work. Gao Yuan lived in the private room and started working.
In the past few days, Gao Yuan stayed in this private room without leaving the door, maintaining the network security of the store while doing his own things.
The task of maintaining the network is very simple for Gao Yuan. Regarding the frequent network problems in the store recently, Gao Yuan’s inspection found that they were malicious attacks by hackers whose sources were temporarily difficult to trace. After telling the store manager about this, the store
Considering that it might be the behavior of a competitor, he didn't explain too much and just let Gao Yuan complete his work seriously.
But what Gao Yuan did himself was not that simple.
In the past few days, he has tried to hack into Japan's household registration system. Although there is no real legal ID card in Japan, there is still a household registration system.
The current identity of "Wise Gaoyuan" is originally a person who does not exist in this world. To completely disguise the identity, of course the identity of "Wise Gaoyuan" must have a reasonable household registration information. As long as this is available, all subsequent identity documents can be passed.
There is no way to solve it, but it is precisely this point that gives Gao Yuan a headache.
After thinking about it, Gao Yuan felt that the best way was to directly hack into the household registration system and add the household registration information of "Zhi Zhi Gao Yuan", and he did have the skills in this area.
But in the past few days, Gao Yuan felt a headache after the actual operation. He had indeed hacked into the periphery of the system. It was not difficult to forcefully break into the system, but there was no way to carry out the operation without leaving any traces or being discovered.
I have been studying this system for several days. If I want to invade the system without being discovered, there is no way unless I have the management key of this system. However, the encryption algorithm of this key is almost completely inaccessible based on the computing power of existing computers.
Impossible to unlock—what to do?
At this time, the program page written by Gao Yuan jumped out, which showed that the daily attacks on the Internet cafe network had begun again.
“It’s endless, come every day!”
Gao Yuan became impatient looking at this page, but he continued to operate steadily on the keyboard.
"You use this method every time. Playing a Trojan takes up so much bandwidth. You are afraid that others will not find it, right? If you don't have so much energy recently, I have to find your source!"
With that said, Gao Yuan quickly solved the problem. Although it was not a big problem, it was like this every day, which was really annoying. It just so happened that there was no progress in the black household registration system for the time being, so it was better to find this annoying intruder first.
In the past few days, I have been invaded by Trojan horses at about the same time every day. I have obviously written a defense program, but I am still being invaded on time every day. A few days ago, I thought that the other party was some master, but in the past two days, I have figured out this.
After looking at the characteristics of the Trojan horse program, you will understand that the other party does not actually have such advanced means.
As for why we are being invaded every day, the answer is actually very simple when you think about it - the other party is not an intrusion attack through the network, but an extremely simple, more physical level, directly installing malicious programs on the computers in Internet cafes.
In other words, the people who surf the Internet in the Internet cafe every day when the Internet cafe network is attacked are the intruders. You only need to ask the front desk to find out who is there.
Thinking like this, Gao Yuan cleared the computer usage records and was about to go out. Suddenly, there was an extremely noisy sound outside the door, including exclamations, running sounds and a shout - "He is dead!"
Upon hearing this, Gao Yuan immediately rushed out and saw that the door of the private room at the end of the corridor was crowded with people. The store manager and two other store clerks were there, as well as a few customers who heard the sound and came out.
After the store manager gave instructions to a clerk next to him, the clerk ran to the front desk of the Internet cafe, apparently to make a phone call.
It was at this time that a burly middle-aged man ran in from outside the Internet cafe, passed by Gao Yuan, came to the door of the private room, looked inside, then reached out and waved away the people surrounding the room, and
shouted loudly.
"Everyone, stay back! Don't get close! Protect the scene! No one is allowed to leave here!"
The astonishing aura immediately calmed everyone present, and looking at his figure and appearance, Gao Yuan recognized the person, and then slowly walked up, wanting to see what happened in the box.
"Excuse me, are you..."
The store manager, who was shocked by the other party, asked in a low voice.
"I am Goro Otaki from the Osaka Prefectural Police Headquarters."
Otaki Goro said and took out his police card.
"No one has been in the scene."
"Yes, the clerk in our store opened the box door after seeing so much blood flowing out of the door. No one dared to go in after seeing this, so I asked someone to call the police. I didn't expect you, the police officer."
The store manager explained.
"I happened to be performing official duties nearby and came over when I heard the sound."
As Otaki Goro said, he walked into the box and roughly inspected the scene.
Gao Yuan also came to the door and saw the scene in front of him.
In the private room, a man whose mouth was sealed with tape was lying motionless on the sofa, his right hand resting on the armrest of the sofa. Blood flowed from his wrist, forming a pool of blood on the ground and extending outside the door.
What's strange is that the sofa should have been facing inward towards the computer screen, but at this moment it was deliberately turned to face the door, so that people outside the door could see the man's miserable state at a glance - the man was covered with tape.
He sealed his mouth and stared in front of his eyes with frightened eyes, and did not close them until he died.
The deceased's bag was turned around in a mess, and the wallet was thrown on the ground casually, with nothing inside at this time.
Officer Otaki looked at such a scene and couldn't help but feel dizzy.
"How could such a heinous crime be committed in a public place? All the property seemed to have been taken away, and the deceased seemed to have been tortured... Could it be that the murderer wanted to steal money?"
No, looking at this scene, Gao Yuan denied Officer Otaki's judgment.
There is no doubt that this case is obviously——
"Vendetta!"
Without warning, a young voice with an Osaka accent came from Gao Yuan's side and said the same answer as Gao Yuan's heart!