The case told by a policeman from Kexintong is quite interesting, and everyone has to lament that with the progress of the times, the methods used by criminals have also advanced to a very high level, and the technological content and concealment are difficult to detect.
Everyone knows that the public security network is a local area network, an intranet, and is not connected to the external network, including any form of physical connection.
Moreover, in the public security system, some documents with higher confidentiality levels are originally left in the archives room. When they are needed, they are approved by the leaders of the units where they are located and then printed or copied and handed over to relevant personnel for use.
The problem lies with the printer.
At that time, the Municipal Bureau purchased a batch of printers with copy functions, and then handed one of them to the archives room for use. It was used in the archives room for a long time, and suddenly one day a code appeared on the printer's display screen, and then
The staff then called the local after-sales company.
The after-sales company said that there was a hardware problem in the machine, and sent a worker to come and repair it. After repairing the machine, the worker had to take away the replaced old parts when he left, saying that the company would recycle them.
If this happened in other departments, such as criminal investigation, economic investigation or Internet surveillance, they might be let go. But the archives involve many secret documents, so the police in charge are naturally more vigilant than those in business departments.
Many say they need to be inspected according to regulations.
But after taking the old hardware that the printer had replaced, I couldn't find anything fishy after looking at it for a long time. When I was about to let him go, I happened to meet the police from Kexintong who had brought all the equipment to help repair the printer.
Seeing that the machine had been repaired, the policeman used the tools at hand to dismantle the old parts and found a micro memory inside. qqxδnew
Later, I turned the memory upside down and found that it contained all the data that had been printed, copied, and scanned by this printer. When the memory was full, an error code would pop up on the printer's display to prompt after-sales service.
Free replacement parts.
If this thing is taken back after the sale and sent to the Southeast Asia head office, the secret will be leaked.
Later, I gave several examples from other provinces, including installing scanners on paper shredders, installing cache devices on power strips, etc. These are all experiences of people who have been there, and everyone carefully recorded them in their notebooks.
Everyone here is an old police officer. Even if they have never actually seen these cases, they have heard about them more or less, so they are not as surprised as they imagined.
But Jiang Hai, who was just a high school student a few months ago, was different. As a freshly minted reserve police officer, he was very motivated to learn and pay attention to police work.
I had been pestering Chen Shu asking questions on the plane before. Now I was very excited to hear such new things, so I naturally approached Chen Shu who was sitting next to me.
"Brother Shu, is it such an exaggeration?"
Chen Shu pursed his lips towards the policeman who was standing in the corner taking photos with his SLR, and whispered: "Sit down first, straighten your back, and take notes."
After the police officer in charge of publicity on the other side finished taking photos, looked at the small screen of the camera and left, Chen Shu briefly talked to Jiang Hai.
"In the future, you will have "Investigation Science" in class, and the teacher will talk to you about such confidential cases. I remember that these techniques were all from a long time ago. I heard about them when I was studying.
.
"Back then, we still used mobile phones with removable batteries. It was popular at that time to remove the battery from the mobile phone during meetings. In fact, this precaution was of no use.
"Our bureau is equipped with a very ordinary-looking van, which is full of technical equipment. I remember that it seems that it can transmit power to mobile phones from a distance of three hundred meters in a straight line, and then call up the call records and text messages inside. Even more ruthless
What’s great is that this controlled mobile phone can be directly converted into a monitoring device, and the on-site sound pickup effect is quite good!”
Jiang Hai's eyes shone, and he grabbed Chen Shu's arm and asked him to talk more.
Chen Shu shrugged and regretted: "After graduation, I went to the special police and the police station, and I have never been exposed to these things again."
"...."
The formal exchange meeting lasted until after six o'clock in the afternoon. After the meeting, Lin Dakai was naturally surrounded by the local police, and they chatted with each other about their respective police experiences and experiences.
Lin Dakai has experience in foreign peacekeeping, especially the area he went to, Nandan, is known as one of the most dangerous mission areas with the worst sanitary conditions in the United States.
When Chen Shu saw that Lin Dakai was surrounded by people discussing and couldn't leave for a while, Chen Shu asked him to help find Zhu Li together.
Judging from the itinerary, after completing their investigation at the Kashi City Public Security Bureau, they will go to the Kashi District Public Security Bureau, a higher level. Judging from the time, they are already a bit nervous.
The two of them left the conference room and wandered around for a long time without finding anyone. Chen Shu took out his mobile phone and made several calls, but no one answered.
Chen Shu thought for a while and returned to the conference room to find Wang Hao: "Wang Hao, is the artifact inspection room here?"
"What room?"
"Xing Da, forensic doctor, corpse."
"Oh, the Criminal Department is in the small building at the back. Where did your female colleague go? She couldn't be a forensic doctor, right?" Wang Hao was a little curious. Logically speaking, no woman would be interested in these places.
Even if they are really forensic doctors, there is a high probability that no one will take the initiative to touch these things unless necessary for work. After all, they are touched every day on weekdays, so there is no need to make yourself uncomfortable during non-working hours.
Chen Shu thought of the on-site investigation box that Zhu Li had brought all the way from Dongzhou, raised his forehead and said, "Yes, she is a forensic doctor."
...
Object identification room.
Zhu Li stood outside the iron gate and said with a smile to a young policeman inside who had deep eyes, a high nose, and a shaved chin: "I came here from the East China Sea for investigation. Please open the door."
"No, I don't know you, you can't come in here." The white coat shook his head and was about to leave.
Zhu Li took out her police card and waved it: "We are all traveling together, what are you afraid of?"
"No, I didn't receive the notice, so I can't let you in."
Zhu Li sighed and said helplessly: "Brother, you are not old, why are you so stubborn? It doesn't matter if you don't know me, my police ID cannot be fake, right? We are all in the police station, what are you afraid of?
..."
Julie, who never gave up her persuasion, heard a sound coming from behind.
"Our place is different from yours in Donghai. It is right to be cautious. Tu Xunjiang, these two came to our bureau from the Donghai Provincial Police College for investigation. If there is nothing important in your room, please open the door.
"
The person who spoke was Wang Hao, who had accompanied Chen Shu all the way from the office building.
"Brother Hao, you're here!" Tu Xunjiang's originally stiff expression immediately relaxed after seeing Wang Hao. He pressed a button next to the door and stretched out his hand to open the iron door.
.
Wang Hao, as the leader of the team that came to support from the corresponding city, was quite popular in the local public security bureau.
"There's nothing urgent. I just delivered a burnt corpse this morning and I'm busy." Tu Xunjiang opened the door and welcomed the group in.
Corpse!
It's better to come early than to come late!
Julie suddenly became happy, her eyes curved into crescent moons, and the corners of her mouth almost reached her cheeks.