Serious Crime Unit 1

Chapter 774 Death of the Prosecutor (3)
It is now the afternoon of the second day after the incident. The rain has stopped. The weather is sunny. There are cotton-like white clouds floating in the blue sky. The spring breeze is blowing warmly. All night long, the city is full of flowers and full of spring. It has swept away yesterday's memories. Cold and gloomy.

There are three pairs of men and women standing on the rooftop chatting under the bright sunshine. The men are full of pride and the women are smiling like flowers. Their laughter is carried by the wind. It seems that they are the happiest people in the world.Judging by their attire, they should be white-collar workers or elites working in a building.

Some of them were holding crystal cups with a small amount of red wine in their hands; some were holding coffee cups, tasting and laughing at the same time, and the atmosphere was harmonious and beautiful.

Wu Jiang walked up to them, took out his police officer ID and said to them: "I'm sorry, we are from the criminal police team of the city bureau. We are here to investigate the scene. We must ask you to leave here."

"What? This is the scene of a crime? How come we haven't heard that a case has happened here?" A tall, handsome, mature man stretched out his hand to shake Wu Jiang's hand and asked in disbelief. Then he introduced himself, "I am the security manager here. His name is Lu Jun."

"We can't explain more to you, please leave here..." Under Wu Jiang's persuasion, they left one by one. When Lu Jun took a few steps, Wu Jiang suddenly stopped Lu Jun, "Manager Lu, Can you please leave us your phone number? We may need your help in the future."

Lu Jun turned around and showed a bright smile to Wu Jiang: "I am very willing to assist you in handling the case. This is my business card. Please accept it." After speaking, he took out an exquisite business card from his wallet and handed it to Wu Jiang.

Wu Jiang took the business card, took a look at it, said thank you, put the business card in his pocket, and then went to investigate the scene.

Dongfang Yuan, where Tang Mingshi lived, is located in the north. There is a guardrail nearly 160 centimeters high and about 20 meters wide on the rooftop of the building to the north. The murderer must use the guardrail to place the sniper rifle on the guardrail before shooting. Therefore, he only needs to investigate the guardrail and Nearly 1 meter under the guardrail is enough.

Wu Jiang and Xiao Ke put on shoe covers and gloves to survey the rooftop and guardrails. Wu Jiang was responsible for surveying the entire guardrail, and Xiaoke was responsible for surveying the rooftop under the guardrail.

There are many shoe prints along the guardrail. There are dozens of different shoe prints. Although they are blurred by the rain, they can still be seen.Xiao Ke first took photos of various shoe prints. He knew that these shoe prints were not of great value because they were not fresh and the shoe prints were almost invisible. If the murderer wore shoe covers to commit the crime and then washed it with rain, the murderer would not be able to see it at all. There will be no shoe prints left, but Xiao Ke still extracts them. What if they are shoe prints left by the murderer when he comes to visit?
Wujiang conducted an inspection on the guardrail. Because the guardrail is made of smooth marble, there are many fingerprints left on it. This also means that there are many hands on the guardrail. It is also because of the washing of rainwater that it is impossible to tell which fingerprint is fresh. Only The deepest fingerprints are likely to be fresh.

But not necessarily, because the deepest fingerprint may be formed by someone pressing his palm hard on it. Wu Jiang chose clear fingerprints to extract. A total of 59 different fingerprints were extracted, put them into the evidence bag, and then tried Went to extract gunpowder, but failed.No cigarette butts or clothing fibers were found.

No cigarette boxes, packaging bags, paper towels or the like were found on the rooftop, which puzzled Wu Jiang. He thought maybe cleaners came to clean the rooftop every day, otherwise it would not be so clean, because only where there are people moving around would there be life. Rubbish.

They surveyed for an afternoon and saw that the setting sun was slowly approaching the Western Mountain. The daylight passed quietly, the night gradually drooped, and the neon lights lit up one after another, so they called it a day and returned to the team.

The next day, they took Lu Yingying to the New Century Building. Wu Jiang called Lu Jun and asked where he was.They were going to find him.Lu Jun said that he was working in the office on the 48th floor and asked them to go to the office to find him, where he was waiting for them.

Lu Jun's office is large and gorgeously decorated, as if he is the boss of the company. It can be seen that the company attaches great importance to him. The security manager is like the country's defense minister to the building. He is responsible for security. Without safety, there is no need to talk about it. The position of the security manager is of course very important.

Lu Jun invited them to sit down and drink tea. Wu Jiang said that he had no time for tea and they wanted to review the surveillance video of New Century Building on April 4.Lu Jun said there was no problem, so he took them to Room 1 on the 48th floor, which is the monitoring room of the building. The monitoring room is very large, about 409 square meters, and is divided into 120 monitoring areas. Each monitoring area has a total of 4 monitors. There are 40 monitors in total, covering almost every public place.

Wu Jiang felt that the murderer most likely took the elevator to the rooftop to commit the crime. It was extremely unlikely that he walked to the rooftop from the stairs. Therefore, he asked to see the surveillance video from 4:1 to 12:00 on April 24. Lu Jun personally Sit at the console and adjust the surveillance video for them.

After he entered the password, he went to check the surveillance video. The result surprised him: it turned out that all the surveillance videos from 4:1 to 08:00 on April 24 had been deleted.Lu Jun didn't believe it. He thought he made a mistake and tried it again, but the result was the same.

Wu Jiang found it unbelievable. This matter was no small matter. He didn't want to talk about it in front of many security guards, so he called Lu Jun to the office and sat down to talk slowly.

Lu Jun returned to the office with them, asked everyone to sit down, and went to boil water to make tea. Xiao Ke couldn't wait any longer: "Manager Lu, what's going on? This is a serious safety incident!" It's never been like this before." A gloomy and angry expression appeared on Lu Jun's handsome face. Of course Lu Jun didn't know that the surveillance video had been deleted by a powerful murderer. He might have thought it was a security breach that someone wanted to challenge.

"Should your video system have a firewall?" Lu Yingying sat opposite Lu Jun. She was not surprised because the murder of a high-level figure like Tang Mingshi was carefully planned and every step was carefully planned.

"Yes, I have set a password, but the password is very simple. It is the first pinyin letter in front of the three characters "New Century", and then add 6688. The overall password is XSJ6688."

"Although XSJ6688 is simpler, it is not easy to be broken. The FBI asked Apple to help unlock the terrorist's phone. The password of the terrorist's phone was only 6 digits, but it was still very difficult, so it asked Apple Assist. I suspect it may be an insider. How many of you know this password?" Lu Yingying asked.

"This... there are many people who know the password. I don't know. I came here to work on May 2013, 5. The New Century Building was completed in the winter of 2 and put into use in the summer of 2000. From that day on, The building has been equipped with a surveillance system for 2001 years now.”

"Does every one of your security guards know the password?"

"No, in order to prevent the leakage of other people's privacy and prevent the surveillance video from being easily leaked, only the security team leader knows the password."

"How many team leaders do you have now?"

"We work in three shifts, with one team leader for each group, a total of 12 team leaders. Of course, this does not include team leaders who have resigned or changed jobs. Every year in our company, team leaders resign or are fired for reasons. In the past 17 years, no fewer than 100 people have become team leaders." Lu Jun looked solemn.

"If one of you logs in to your surveillance system with a password, you can easily delete the video. As long as you have money, most team leaders will sell their passwords. This is equivalent to finding a needle in a haystack, and the possibility of finding out the insider is very slim. Your password Hasn’t it been modified?”

"I changed it once after I took office. The original password was XSJ8888, and I changed it to the current password. Officer Lu, I heard that you are a computer expert. You should be able to find out which IP address the mole invaded our monitoring system from, right? "

"It can be checked, but insiders or hackers will not easily let us check the IP address. If they use other people's or public IP addresses, they will not be able to check it. Of course, they have various ways to hide their IP addresses. All in all, I’m not optimistic, but an investigation is necessary. What if some rookie did it?”

"If it's the mole who did it, I will definitely skin him off after I catch him!" Lu Jun said through gritted teeth.

"China has not enacted laws to skin criminals. You should consider how to change the password and narrow the confidentiality circle." Seeing him like this, Lu Yingying replied with a slightly sarcastic tone. After hearing this, Lu Jun felt a little embarrassed and realized at the same time My own confidentiality work is not done well.

"Oh, now that the surveillance videos of the four elevators have been deleted, you can check the surveillance videos of the gates. Our building has a total of 4 gates, one gate each in the southeast and northwest, but most people enter the building through the south gate. ." Lu Jun suddenly remembered.

"I don't think this is optimistic. The suspect should have deleted all the gates and surveillance videos. If you don't believe it, let's go with you to the surveillance room again." After Lu Yingying finished speaking, she picked up a teacup and put After finishing the tea in the cup, she stood up and walked out, everyone followed her.

After checking, as expected, all the surveillance videos in the building from 4:1 to 12:00 on April 24st were deleted. Lu Jun found it incredible, but he had to admit the cruel reality. He is 00 years old this year. This has never happened to the young and promising man. He is a perfectionist, and even a small failure will hit him hard.

(End of this chapter)