Serious Crime Unit 1

1102 Chapter 12 Killing All ([-])
“更吊诡的是自从18日晚上9:40到19日8:30这段时间没有任何人进入过真亦伟的病房，哪怕一只蚊子也不可能飞进去，因为病房里有灭蚊器。”

"The only people who entered the ward from 18:9 pm on the 40th to 19:8 pm on the 30th were doctor Zhao Ming, nurses Xie Yuzhen and Jiang Yun, while Huang Hua entered at 19:8 on the 30th. It was he who discovered Zhen Yiwei Dead. Old Wu, did you and Xiao Ke find anything?" Jiang Yiming asked. In fact, he knew that he was asking knowingly. The murderer did not enter the room, even if he turned the entire ward over, it would be useless.

"Four types of shoe prints and several fingerprints were extracted at the scene. After comparison, the shoe prints and fingerprints were those of Zhao Ming, Xie Yuzhen, Jiang Yun and Huang Hua respectively, and were worthless."

"But Zhao Ming and Xie Yuzhen have already passed the polygraph. There is no way they can cheat the polygraph, so the two suspects can be eliminated. The only ones left are Jiang Yun and Huang Hua. I believe they cannot be bribed. The murderer is simply He is an invisible person." Wen Xiaorou said.

"How did Xie Yuzhen inject insulin into Zhen Yiwei?" Lu Yingying asked.

"I asked Xie Yuzhen, and she said she used an insulin pump to inject insulin." Jiang Yiming said.

"Oh, I know the murderer's trick... Insulin pumps use artificial intelligence to control the input of insulin into the human body. It simulates the physiological secretion of insulin to control high blood sugar. Insulin pumps are usually hung on the waist or placed in the pocket of pants. There is a stick The thin tube is connected to the body, similar to an infusion, but there is no needle, only a flexible tube implanted under the skin. There is an insulin cartridge in the pump. Insulin is continuously injected into the body 24 hours a day, equivalent to an artificial pancreas. When the insulin runs out, Replace the refill and continue using it. Luo Jin, you are the one who took off Zhen Yiwei's clothes. Did you find an insulin pump on him?" Lu Yingying asked.

"Yes, I found an insulin pump hanging on Zhen Yiwei's body, and it is still in the evidence bag at the forensic center."

"Great. Because the insulin pump is artificially intelligent, as long as it is hacked, the hacker can modify the amount of insulin injection through the network. When Zhen Yiwei was asleep, the hacker invaded the insulin pump and increased the amount of insulin injected. The amount of blood sugar caused Zhen Yiwei to go into shock and die due to hypoglycemia. I have seen this kind of case before."

"Oh, does that mean a hacker can use the wireless network to hack into the insulin pump not far away without entering the ward?" Jiang Yiming asked.

"Yes, hackers can use wireless networks to invade insulin pumps within 100 meters. Since insulin pumps need to be implanted in patients, they are equipped with wireless transmitters. And this happens to be the fatal point for hacker attacks." Lu Yingying was sure say.

"Are there such powerful hackers?"

"Of course there are, but very few. I don't think there are more than 500 hackers like this in China."

"How much would it cost to hire this kind of hacker to kill people?" Zhou Ting asked.

"I don't know about this, and I wasn't hired to do this kind of thing... I think it will cost at least several million or even tens of millions of yuan."

"We assume that the Wang family hired someone to do it. Then, such a large amount of money should not be traded in cash, right? If we use transfer, we can check it from the Wang family's account." Xiaoke said.

"Not necessarily. The Wang family is very smart. If it is through money laundering or virtual currency transactions, it will be difficult for us to find out. For example, if you use Bitcoin transactions, it will be difficult to find out because Bitcoin transactions are prohibited in our country. However, our country is still the same Many people buy Bitcoin because they have opened bank accounts abroad, such as opening a bank account in Malaysia to buy Bitcoin, and the Wang family has overseas business and can easily buy Bitcoin."

"But cross-border investigations are too difficult, and the procedures are too cumbersome. We don't know when or what month we will be able to arrest the murderer. Besides, it is too difficult to ask foreign banks to cooperate with our investigation... Yingying, can you start with the IP address? "Jiang Yiming asked.

"If a hacker uses the wireless network of nearby residents to commit crimes, the hacker will not be found. Of course, if you know the IP address of the hacker's intrusion, you can check the surveillance video of the community or unit to find suspicious people. However, if the hacker If the IP address is encrypted, it will definitely not be detected because it will take a long time to crack the password."

"Is there any other way?"

"We can only draw a circle with a radius of 100 meters and the crime scene as the center, and visit and investigate suspicious people within this range. If the hacker is witnessed, we can draw a portrait of the hacker and display it nationwide. He is wanted within the country. This requires a lot of police effort and time," Lu Yingying said. "Do you think the murderer of Shinaki and Shinjue and the murderer of Shinyiwei are the same person?"

"It can't be the same person. The hacker never does physical work, let alone exposes his face to the surveillance video. He has many ways to evade the surveillance video, such as wearing an electronic jammer, which can interfere with all the surveillance cameras he passes. Utensil." Lu Yingying replied.

"I think we should cooperate with the economic investigation team to thoroughly investigate all the accounts and journals of the Wang family. If any abnormalities are found, we should conduct an in-depth investigation." Wu Jiang said.

"Let's see, Yingying will lead a team to review the surveillance videos of communities or units near the provincial hospital, and Xiaorou will lead people to continue investigating the surveillance videos near Nanlukeng Reservoir. Lao Wu, Xiao Ke, Zhou Ting, and I will each lead A team visited communities or units within 200 meters of the provincial hospital to see if they could find information about the hackers. Shi Wei continued to monitor the Wang family, and Huang Hua continued to protect the Zhen family, because the wives and children of the three sons of the Zhen family were still alive. Yes. I will coordinate with the economic investigation team and ask them to check the Wang family's accounts. We will take a multi-pronged approach and cast the fishing net widely. I believe there will always be fish caught in the net." Jiang Yiming assigned the task.

Jiang Yiming went to Fang Lihua's office and reported the situation to him.Fang Lihua supported his working methods and promised Jiang Yiming that he would send an economic investigation team to investigate all the bank accounts of the Wang family, and would also try to investigate bank accounts opened by the Wang family overseas. However, this would take time.

Jiang Yiming called deputy captain Liu Xiaowei and asked him to lead the No. 2 Major Crime Team to cooperate with them and visit and investigate together. Liu Xiaowei was very happy to join the investigation.In this way, Jiang Yiming's team will be much stronger.

Lu Yingying connected the insulin pump used by Zhen Yiwei to the network to find out the traces left by the hacker. She found that the switch of the insulin pump was adjusted to the maximum, and 300 units of insulin could be injected into Zhen Yiwei's body in an instant. leading to his death.

If a hacker needs to know the serial number of Zhenyiwei's insulin pump to hack into it, then who tells the hacker the serial number?Zhen Yiwei bought this insulin pump online and has been using it for 6 years. His relatives and friends must have told the hacker or the Wang family the serial number. Can we find the suspect from the people around Zhen Yiwei? ?
Lu Yingying thought for a while and felt that this was too time-consuming and laborious, and the hope was slim, because anyone who saw the insulin pump would probably write down its serial number.She wanted to find the IP address that hacked into the insulin pump, but found that it was encrypted. Lu Yingying tried to decrypt it, but the hacker set a complex password that could not be decrypted in a short time.

Jiang Yiming led 10 people, divided into 5 groups, to conduct blanket visits and investigations on the residents near the provincial hospital. The provincial hospital is located in the bustling city center, with many people coming and going. It was impossible to question the people passing by, but only to the community. They visited people in the unit. As a result, they visited for three days but found no clues. Of course, they only visited half of the households.

There is a community called Youran Yayuan near the Provincial Hospital. There are only 610 households in it. It is a high-end residential area. Jiang Yiming and Zhou Ting are responsible for visiting residents in buildings 1 to 10. On the morning of May 5, they came to Room 29 in Building 5 and rang the alarm. After a while, a young girl opened the door.

"Hello, we are from the Criminal Police Team of the Municipal Bureau. We would like to know the situation from you. Can we go in and talk?" Zhou Ting took out his police officer ID card and handed it to her. After she read it, she opened the door and let them in.

"Excuse me, what is your surname?" Jiang Yiming asked after the two parties sat down.She has delicate features, delicate fair skin, and a tall and slender figure. Although she is not particularly beautiful, she is very attractive because she has an elegant temperament and exudes the fragrance of books.

"Oh, my name is Lu Qingqing. I run an online store at home, selling books, audio-visual products, and clothing." Her voice was as gentle as water, slender and sweet.

"Well, there is a suspect who used the wireless network of a nearby resident to kill an innocent old man. So, we are here to investigate the matter. Have you found that your wireless network was hacked in the early morning of May 5th? Did someone take advantage of it?" Jiang Yiming knew that the hacker used the wireless network to invade between 19:19 and 4:30 in the morning on the 5th. At that time, most residents were sleeping, which was also the best time for the hacker. So I didn't have much hope in asking Lu Qingqing.

"I didn't have access to the Internet at the time, and I don't know if I was taken advantage of. But at about 5 o'clock that morning, when I went to the White Horse Shopping Mall to purchase goods, I opened the door and saw a young man standing next to the corridor, surfing the Internet on his mobile phone. He was very engaged. , didn’t notice me looking at him at all, I felt strange, how could someone come to someone else’s Wi-Fi so early?”

"Did you see his face clearly?"

"I saw it clearly, because the lights in the corridor were very bright at that time, and it was already dark, so his face appeared clearly in my eyes."

"Please describe his height, weight and appearance. The more detailed you are, the better."

(End of this chapter)