□ Our reporter Yu Dongming

  □ Our intern Zhang Ruolian

  □ Our correspondent Ruan Junfeng

  On June 28, 2019, the "Dragon Love Quantum" extra-large pyramid selling case that spread across the country was sentenced in the Babu District People's Court of Hezhou City, Guangxi Zhuang Autonomous Region. 20 defendants were sentenced to fixed-term imprisonment for the crime of organizing and leading pyramid selling activities. From 11 months to 11 years, a corresponding fine (a total of 92.45 million yuan) will be imposed, and about 1.9 billion yuan of property will be confiscated according to law.

On November 21, 2019, the Hezhou Intermediate People's Court upheld the original judgment in the second instance, and the case has now been settled.

  This pyramid selling case originated in August 2016. Several defendants sold so-called "quantum high-tech products" on the "Long Ai Quantum" online platform. By purchasing products, developing offline, and paying membership fees, they attracted people online. Nearly 2 million people participated in the MLM campaign.

Each participant needs to pay an entry fee ranging from 850 yuan to 85,000 yuan in six levels to register as a platform member.

  With the growing scale of "Dragon Love Quantum", this pyramid selling gang has also attracted the attention of the public security organs, and finally the incident was revealed and the crime was exposed.

  The case has caused great social impact, but it is little known that the person who provided the key evidence for the case came from the audio-visual and electronic data identification research of the Academy of Forensic Science and Technology (hereinafter referred to as the Division of Jianyuan). room engineer.

  Li Yan, a senior engineer who joined the Court in 2010, was the main appraiser in the case.

During the interview, Li Yan opened the 36-page appraisal report, and while looking at the large and small tables and code screenshots interspersed in it, he recalled the appraisal process that exhausted them both physically and mentally.

  "The social impact of this case is very great. The Hezhou Municipal Public Security Bureau found us at the recommendation of the Autonomous Region Public Security Bureau." Li Yan said, "They brought three hard drives with them, which contained all the data involved in the case. Among them, two The capacity of the hard disk is 8TB, one is 2TB, and it is full of dense code and data.”

  Li Yan told reporters that the inspection materials they got in their hands were like a large bundle of knotted threads, and what they had to do was to pull out each thread and straighten it out, and they had to find out the most important ones. of those lines.

"The public security organs have a lot of requirements for appraisal. There are a total of 9 entrusted matters, such as analyzing the number of members of the website, membership level, calculating the total investment amount of members, counting member points, and analyzing the reward mechanism of members... The whole task is very heavy and time-consuming. urgent."

  Putting down other tasks at hand, Li Yan and his colleagues immediately started the identification of the case.

  The biggest difficulty in this case is to simulate and reconstruct a "Dragon Love Quantum" network platform in the local area network of the laboratory.

"The public security organs had already seized the online website at that time, but if we wanted to calculate various data, we had to build a new one according to the original appearance of the website, which was very difficult because the website structure was too complicated and the amount of data was huge. "Li Yan said that it took more than half a month to build the website alone.

  In the process of building the website, they encountered many problems, such as the inability to log in to the website, the inability to enter the page, etc. At this time, they can only stop, go back to check and repair, and try again.

In the end, the website was finally set up, but the troubles followed.

  "The most troublesome thing is to analyze the points circulation rules of the website, that is, how the points of the member account flow in and out. It is not an intuitive data placed on the hard disk, but requires us to decompile and restore the code to the original look like, and then read and understand the process of code implementation." Li Yan said.

  Li Yan then showed the reporter a screenshot of the code page on the server. After finding the reporter's blank face, he smiled and said, "These are relatively professional things, and it is not easy to explain clearly... Before and after our appraisal. 11 kinds of equipment and tools are used, and there are some obscure professional terms in the identification process, and people who are not in this profession may be confused."

  Fortunately, the hard work paid off. Two months later, this problem was finally solved by Li Yan and the others.

After identification, the number of members queried through the "Long Ai Quantum" website database is more than 1.963 million, the number of member levels is 97, and the number of members belonging to the "Entrepreneurship Center" is 3,191... These figures are all from Li Yan and others. calculated with precision.

  Based on the "Dragon Love Quantum" website simulated by their intranet, the public security organs in other regions also found them and entrusted the identification of a large number of "Long Ai Quantum" pyramid selling cases. Li Yan and the others successively issued more than 300 identifications. Report.

  In December 2018, when the "Long Ai Quantum" case was heard, Li Yan and his colleague Guo Hong testified in court as appraisers.

Li Yan told reporters that the case had been tried for 14 days before and after, and the defendant's lawyer team consisted of more than 20 people. Considering the "talking and talking" in court, they had to be fully prepared.

  In this regard, Li Yan still vividly remembers: "There are various lawyers' questions. I still remember a lawyer asking us how to analyze the relationship between the investment amount and the level of members. The logic of the question is very meticulous, and it can be said that it is pressing step by step. The report was very familiar and confident, and I directly showed him page 22 of the appraisal report, and then gave a detailed explanation."

  With the court's verdict, this major case came to an end.

But Li Yan's identification work did not stop.

He told reporters that at that time, the laboratory was still in the exploratory stage for the simulation of building a website, and now the technology has matured a lot. Now it only takes a week or even less to build such a website.

  Under the tempering of various intractable diseases, it is not only the identification technology that has matured, but also Li Yan and his team.

From simple data collection and extraction to complex business emails and electronic medical record case analysis, over the past 11 years, the scope of electronic data appraisal business of the Si Jian Yuan has become larger and larger, various new technologies have emerged one after another, and the appraisal level has become higher and higher.

  "The size of the case is not important. What is important is that we must give the most rigorous and accurate appraisal report. Only in this way can we be worthy of the people and the sacred duty entrusted to us by the law." Li Yan said.