257 Lock up the suspect
With the addition of Zhong Caini, whose computer level is comparable to Yang Yuting, Qi Zhibin suddenly felt a lot more relaxed.
Especially when Zhong Caini carefully checked the computer used by cashier Li Hong to transfer money online, and clearly came to the conclusion that "the transfer of 56.15 million huge funds was operated through the remote control program that was secretly installed in the computer by someone and set up to start the computer", Qi Zhibin immediately had a complete investigation idea.
What is certain is that the person who secretly installed the remote control program is the suspect.
Moreover, the suspect must have the opportunity to contact Li Hong's computer alone, and have a certain amount of computer knowledge, at least be familiar with the operation and use of remote control programs.
Because Ruibo Group has a relatively strict and perfect financial system, the scope of suspects is concentrated on five people in the finance department - Zou Shilong, the minister of finance, two accountants in charge with their own division of labor, Li Hong, an online bank cashier, and another cash cashier.
However, in the past three months, that is, from the time when the remote control program was installed, only Zou Shilong and Li Hong had the opportunity to contact the computer alone. Naturally, the two of them are also the most suspicious.
First of all, Li Hong not only has the opportunity to contact the computer alone, but also knows all three passwords for online bank transfers - login password, U shield password, and payment password. And the QQ number used to register the remote control program is Li Hong's own.
However, after Qi Zhibin's investigation of the other four people in the finance department, as well as other people who are close to Li Hong, Li Hong's computer level is limited to ordinary business operations. Usually, once something malfunctions in the computer, she asks others to deal with it, and she can't deal with it herself. In other words, Li Hong does not have the second condition.
Also, the remote control program registered with her QQ number. After careful analysis, if the person who transferred the 56.15 million yuan of funds was really Li Hong, would she leave such a big loophole? Why did she have to use her QQ number to register? Obviously, this behavior is very unreasonable. Moreover, as the actual user of that computer, Li Hong had every opportunity to delete the remote control program as soon as the matter was completed, why didn't she do that?
After such an analysis, Li Hong's suspicion is not so big. However, for the time being, it cannot be ruled out that she committed the crime with others.
In this way, in addition to Li Hong, there is Zou Shilong, the Minister of Finance.
It's just that there are two doubts that need to be explained. First, how did Zou Shilong, who only knew the online banking login password, know the U shield password and payment password. Second, as long as you log in to the online banking, you must first insert the U shield, so if it is really Zou Shilong, how did he get the U shield.
Of course, if Zou Shilong and Li Hong committed the crime together, the problem would be solved. However, so far Qi Zhibin has found no evidence of this.
Through further understanding of Li Hong, as well as the confirmation of others in the Finance Department, and carefully watching the internal monitoring data of the Finance Department when the 56.15 million yuan of funds were transferred, Qi Zhibin quickly solved the second question. It turned out that when Li Hong went out for lunch at noon, he forgot to unplug the U shield from the computer.
Li Hong's own explanation is: "When I got off work in the morning, I just transferred 360,000 yuan to the customer. It was 11:35 p.m. when the transfer was completed, and it was already past the end of work. Because I was in a hurry to pick up my child from kindergarten, I just quit online banking and forgot to pull out the U shield. ”
Chen Xugui, the chief financial officer, confirmed that not only was the transfer in the morning a fact, but Li Hong did have a five-year-old daughter in the kindergarten not far from the unit, and she was responsible for picking up and dropping off at noon every day. In other words, although it cannot be ruled out that Li Hong is suspected of committing the crime with others, her explanation is reasonable.
Continuing the investigation, it was found that during the time period when 56.15 million yuan of funds were transferred, among the five people in the finance department, Li Hong took the children home for dinner, and the two accountants and cash cashiers were eating in the unit canteen. Only Zou Shilong, the Minister of Finance, had his own lunch in the lounge diagonally opposite the door of the Finance Department, and then read the magazines there and rested for a while, until Li Hong and the other four returned one after another.
"Dr. Zhong, can the remote control program hidden in the background be activated by the phone?"
"Yes. Zhong Caini said with great certainty: "Moreover, through the detection of the source program of the remote control program, it is found that there is indeed a backdoor in it, which can be activated through the network through the mobile phone or computer with the relevant program, so as to carry out the corresponding operation." ”
"Is it possible to say that, because it is through the backdoor left in the remote control program, and the operation of transferring 56.15 million yuan of funds in three tranches is completed through other computers to control the cashier's computer, it can basically rule out the suspicion that Li Hong deliberately left a U shield?"
"Well, that's true. Chung pondered for a moment and explained: "If the online banking cashier was committing the crime with others, it would not be possible to explain her withdrawal from the online banking when she left at noon. ”
At this point, Qi Zhibin basically ruled out the possibility that Li Hong was committing the crime with others.
Because after the incident, the company's security department immediately isolated the five people in the finance department and collected their mobile phones, so Qi Zhibin and Zhong Caini immediately checked the five mobile phones. In the end, no suspicious software was found that could trigger the remote control program.
Could it be that your own speculation is skewed?
Just when Qi Zhibin was puzzled, Ling Zhan, who had been investigating the financial situation of Zou Shilong and Li Hong and other five-person families all afternoon, came back.
"Did you find anything?"
When Qi Zhibin told Ling Zhan about his findings and suspicions, including the results of the analysis, Ling Zhan nodded and said, "It's generally good, through the investigation of the economic situation of the five of them, it was found that only Zou Shilong's situation was a little special. ”
It turned out that Zou Shilong divorced his wife two years ago, and since then he has been renting a house with his son, who has just entered the second grade of primary school. The monthly rent is 4,000 Wu Bai yuan, and Zou Shilong's salary is only a little more than 8,000, and there is not much left after excluding the living expenses of the father and son, as well as water and electricity bills. This is not the most important thing, the most important thing is that Zou Shilong still owes a huge foreign debt of more than 600,000 yuan.
"How could he owe so much money?"
According to neighbors, Zou Shilong originally had a happy family of three, and he was also a very good person. However, since I got into the habit of gambling three years ago, I can't extricate myself at all. Not only did he lose all his family's savings, but he also lost the house where his family lived, and he also owed 200,000 yuan to a loan shark. It was because of this that his wife divorced him. ”
"200,000 yuan of usury is now turned into 600,000?"
"Yes, and the loan shark goes to his house every day to block the door and ask for money. ”
In this way, it is very likely that Zou Shilong did it. Qi Zhibin asked Ling Zhan for instructions: "Do you want to call him immediately, Ling Team?"
"I've arranged for someone to go. Immediately, Ling Zhan handed Qi Zhibin a search warrant and said, "You immediately lead the police from the police station in the jurisdiction to search Zou Shilong's residence." ”
"Yes. ”
Seeing Qi Zhibin turn around and leave, Zhong Caini hurriedly asked Ling Zhan, "Can I go with me to have a look?"
"Hehe, I can't ask for it. ”
First, Yang Yuting confessed that the encryption program in the notebook found in the closet of Yang Yutang's villa, which contained evidence of Yang Yutang's money laundering and the indecent video materials of the three victims in the evil tattoo case, was committed by Zhong Caini. Moreover, on the night after Zhong Caini and Wu Ming were attacked in the grassland, a bank later reported that Zheng Qianjun's bank card that was not in his name, and that a total of more than Wu Baiyuan's funds in another bank card were inexplicably transferred, which also made people suspect that Zhong Caini was also responsible. Therefore, for Zhong Caini's computer level, Ling Zhan is very aware of it.
With Zhong Caini's assistance, Ling Zhan believes that this sudden case of transferring a huge amount of 56.15 million yuan through online transfer through remote control programs will soon be solved.