Recommend a "back door" wallet software, stealing nearly 200 bitcoin, he was sentenced to 5 years

Born in 2009, Bitcoin, from the initial publicly traded US$0.0025 to the current US$10,000, has appreciated by about 4 million times, attracting the attention of countless people.

Bitcoin, known as absolute security, who has the private key is who anyone else can't break. Bitcoin itself is safe, but complicated and difficult to understand, this new field is full of traps. Whether it is an exchange or a variety of wallets, the security issue is a nightmare that no white player can ignore.

Recently, the Chinese refereeing paper network has published such a case. A Taizhou man born in 1986 in Jiangsu Province, modified the code to create a bitcoin "cold wallet" and recommended it to others. When someone else deposited the money into the wallet, he used the software "back door" to secretly transfer the money away. By this method, nearly 200 bitcoins were illegally obtained, and the final case broke out. After the second trial and the original judgment was upheld, the man was sentenced to 5 years and 8 months and was fined a huge fine.

Modify the software, install the back door, and transfer away nearly 200 bitcoins

A few days ago, the Intermediate People's Court of Fuyang City, Henan Province, published a copy of the book "Daily illegal access to computer information system data, illegal control of computer information system second instance criminal ruling." The verdict shows that the appellant (the defendant in the original trial) Dai Mou, male, born in 1986, Han nationality, was born in Tongzhou City, Jiangsu Province, university culture, unemployed, rented and rented Shanghai Pudong New Area.

On August 8, 2017, he was arrested on suspicion of fraud. On August 12 of the same year, he was criminally detained by the branch office of the Zhongyuan Oilfield Public Security Bureau of Henan Province. On September 15, 2018, he was arrested by the People's Procuratorate of Hualong District of Fuyang City for theft. The arrest was carried out the following day.

Details of the man’s crimes were shown in the first-instance judgment, and it was found through trial:

1. From March to April 2017, the defendant Dai Mou was in the office of an office building on the South Road of Tibet in Shanghai, recommending the software to “safely store” Bitcoin to the victim Wang, and installing the file named “99” on the computer. The compression software and teaches Wang how to use the software to generate bitcoin wallets.

After wearing a software "back door" (meaning the illegal program of invading the computer system), he steals 5 bitcoins (purchasing price of about 25,000 yuan) deposited by Wang into the above wallet, and sells for more than 20,000 yuan.

According to the victim Wang, the victim said: "On March 9, 2017, I met Dai Mou through WeChat. He said that Bitcoin purchased on 'Bitcoin China' and 'OKcoin Bank' is not free. Dominant, not real bitcoin, there is an open source platform to store real bitcoin, free to circulate, let me go to Shanghai to teach how to operate." Wang was deceived by Dai's so-called "storage".

2. On July 16, 2017, the defendant Dai Mou introduced the “safety” bitcoin compression software “wallet.rar” to the victim Wu Mou via the mobile phone WeChat, and sent the software to Wu Mou. Its method of operation. On the same day, Wumou deposited 188.3 bitcoins in the bitcoin wallet generated by the software.

At 5 o'clock the next morning, Daimou illegally acquired the private key of Wu Bitcoin wallet through the software "back door" set in advance, and stolen 188.209 bitcoin (purchase price of about 2.9 million yuan), which was sold through WeChat. Liang was 5.87, and the rest was sold through two bitcoin trading platforms, with a total profit of 300,952.19 yuan, and cashed out to multiple bank cards such as Ping An Bank, Bank of China, and Industrial and Commercial Bank of China.

On August 8, 2018, Dai was arrested by public security personnel.

It was also found out that before the incident, the defendant Dai Dai repaid the victim Wu’s economic loss of 120,000 yuan. After the incident, the defendant Dai and his close relatives withdrew a total of 649,755.51 yuan; the public security organs recovered and frozen Dian’s account for more than 1.1 million yuan in the Zhejiang online merchant bank account, and the Chinese bank account amounted to 22,900 yuan; Daimou used the money to buy Tianhong Fund Management Co., Ltd. account balance of more than 150,000 money market funds, Penghua Fund Management Co., Ltd. Penghua An Yingbao currency fund share of more than 50,000; Dai Mou in China Sun City VIP Club (gaming) account [ (XX)345 group 3234] HKD 120,000 yuan; detained a Toyota brand car of Su JXXXXX owned by a certain person and mobile phones, laptops, bank cards and other items.

Coincidentally, regarding the victim’s cause of the victim, according to the victim Wu’s statement: “I was pulled into the “Bitcoin (absolute genuine currency) offline] WeChat group created by Dai. On July 16, 2017, Dai It is not safe to say that bitcoin is on the platform. I can teach me a way to store Bitcoin safely, and pass a software through WeChat, let me follow the steps he puts, store Bitcoin in the software generated wallet address." It is also tricked by Dai’s known bitcoin “storage” method.

Regarding the reason for modifying the software code and stealing other people's bitcoin, Dai said in a confession, "Because 98% of Bitcoin players don't know what Bitcoin is, they can learn the real principle of Bitcoin less, and I am In 2012, it took three months to fully understand the principle of Bitcoin, which can be rewritten to whatever I want according to the principle of Bitcoin. That is to say, the 'back door' can be set in the software (refer to the security of bypassing software). Sexual control, the method of obtaining program or system access rights from a more secret channel.)

The first-instance judgment also showed that once Daimou obtained the victim's bitcoin, it would carry out a large number of transactions. In a confession, Dai said, "The reason why I want to transfer so many wallet addresses is to clean the bitcoin, so people don't find it." "I am not only using the domestic platform in the process of transferring Wu Bitcoin. I also switched to a foreign platform to realize the function of mixing coins, so that these coins can be washed white." Bitcoin's various advanced anonymous trading functions have been fully utilized by Dai.

In view of the particularity of the case, the Computer Judicial Appraisal Institute of Panshi Software (Shanghai) Co., Ltd. also issued a computer judicial appraisal opinion: confirmed by the Bitcoin storage software test extracted from Dai’s computer, the program is transferred in bitcoin The step of generating a transaction code check code will send the private key of the user's bitcoin wallet to "".

Although the defendant Daimou confessed in court, his evidence at the investigation stage and the victim’s Wu’s statement, judicial appraisal opinions, bitcoin transaction details, and bank transaction details were mutually confirmed, confirming that Daimou recommended the storage of bitcoin to Wu. After the software, through the pre-set software "back door", illegally acquiring the computer information system data of Wu, and profiting from it, is enough to determine. In the end, the court found that the defendant Dai Dai violated the state regulations, invaded the computer information system of others, and obtained the data stored in the computer system. The circumstances were particularly serious. His behavior jeopardized the security of the computer information system and constituted the illegal acquisition of computer information system data. .

Dai Mou took the initiative to compensate the victim for some economic losses after the incident, and may be given a lighter punishment as appropriate.

According to Article 255, paragraph 2, and Article 64 of the Criminal Law of the People's Republic of China, the Supreme People's Court and the Supreme People's Procuratorate's Interpretation on Several Issues Concerning the Application of Laws in Handling Criminal Cases of Computer Information System Security Article 2 of the Articles and Articles 365 and 369 of the Interpretation of the Supreme People's Court on the Application of the Criminal Procedure Law of the People's Republic of China, with the defendant Dai Dai committing illegal access to computer information Systematic data crime, sentenced to imprisonment for five years and eight months, and fined 200,000 yuan; ordered the defendant Dai Dai to repay the victim Wang Mou economic loss of 25,000 yuan, the victim Wumou economic loss of 2.78 million yuan, the judgment came into effect Pay in the next ten days.

Software that is not downloaded using unknown channels is the most basic security precaution

Safety is always an unavoidable problem for the currency, especially Bitcoin. What are the current security risks facing the currency circle? In this regard, "Daily Economic News" reporter interviewed the founder of the blockchain ecological security company Slow Mist Technology cosine. Cosin analyzes the reporter. "In short, there are two main risks in the currency circle. The first risk is underground hackers. The current currency circle, whether it is infrastructure or superstructure, is relatively fragile. Relative to the Internet, attackers The cost of attack is very low. Through these attacks, underground hackers can steal a lot of digital currency. The second risk is the lack of supervision in this industry, the lack of state-related regulatory endorsements, and a lot of chaos, such as various funds, Gaming, etc., these acts are actually illegal fundraising with blockchain gimmicks."

So how to protect the security of digital currency? In this regard, Cosin said, "This is a new industry. Small white investors should learn more about this industry. Don't just look at the surface. As the knowledge deepens, there will be a lot of superficial packaging and gimmicks." In addition, mobile phones and computers that store digital currency should install anti-virus software. It is the most basic security precaution to store digital currency without using software downloaded through unknown channels."

Article source: Daily Economic News