The ＂dark net＂ cancer has to be shoveled by the whole world.

　　On June 25, the Supreme People’s Procuratorate held a press conference, emphasizing the implementation of three major measures to crack down on new drugs, "dark net" transactions and other new drug crimes. The mysterious network of "dark net" has once again entered the public eye in the near future.

　　The operation is secret and the supervision is difficult.

　　The Internet is like an iceberg. What people contact and use is only the tip of the sea, that is, the "surface net", while the larger and more complex "deep net" is hidden outside the reach of the public and grows wildly. The "dark net" is an important part of the "deep net", also known as the "hidden net". Access to the "dark net" requires multiple special means, and ordinary users cannot search and access it through conventional Internet means.

　　This is also the biggest feature of "dark network". It can connect every terminal through a special network protocol, but at the same time, these terminals have no determinable IP address, but transmit through the "dark network" protocol. This means that it is extremely difficult for people to supervise the "dark net".

　　The concept of "dark net" was first put forward by American scientists. In 1996, three scientists from the U.S. Naval Research Laboratory proposed in their papers that the "dark net" came into being in order to build a system in which users could connect to the Internet without revealing their identities to the server.

　　How can I get the content on the "dark net"? First of all, we can build a "hidden server" access according to the specific coding technology adopted by the "dark network". The user’s access request will not jump directly to the destination, but will be sent along a circuitous path. In addition, you can also obtain the "dark net" content with the help of targeted crawler (a program that automatically obtains the content of web pages) and specific search engines. Because the server address and data transmission of the "dark network" are usually "invisible" and the data and passwords are protected layer by layer, it seems that people can enjoy the ultimate "freedom" in the "dark network" space.

　　Trade is rampant, threatening public safety

　　Under the temptation of this extremely private space, the "dark net" has gradually become a breeding ground for evil deeds such as black-related, terrorism-related, child pornography, selling stolen goods and money laundering, killing people and stealing goods.

　　It is also through the "dark net" that some drug transactions are bridged. The data shows that except for nearly half of meaningless data, drug information accounts for about 6.3% of the "dark net" information data, followed by extremist information, illegal pornographic information, hacker information and violent information, which also constitutes a threat to public safety and social order to some extent.

　　At the same time, privacy security is also challenged with the rampant "dark net" transactions. In August 2018, the user information of hotel chains under the hotel group was suspected to be leaked, and the seller packaged and sold 500 million pieces of guest data in the "dark net". Such a "dark net" of unscrupulous sales of citizen information once again triggered public concerns about network information security.

　　In addition, cryptocurrency has always been the biggest boosting factor for the "dark net" to mature. These cryptocurrencies with anonymous attributes enable criminals to circumvent the supervision of the government and banks and avoid the identification and tracking of relevant institutions when purchasing related "services" through "dark networks". The blockchain analysis agency released a report on July 1, saying that in 2019, the transaction volume of a virtual currency in the illegal online market of "dark net" is expected to exceed 1 billion US dollars, a record high.

　　Upgrade technology and strengthen international cooperation.

　　Using the "dark net" to commit cyber crimes has become one of the most prominent problems in the field of cyber security, and it is also the focus of international cyber security governance. In 2016, the Netan Corps of Beijing Public Security Bureau successfully destroyed a group that used Internet media such as "dark net" to spread obscene information about children for the first time, and arrested eight suspects. This case became the first case of overseas covert network crimes uncovered in China. In July 2017, the United States smashed the "dark net" black market trading website "Alpha Bay", which was the largest black market trading website smashed in the world at that time. In addition, Europol, the Netherlands, Thailand, Canada, Britain, France, etc. also participated in the action against the "dark net" black market.

　　Although countries have been cracking down on "dark net" crimes, there are still many difficulties in technology and system. Breakthrough in technical means is one of the key elements to further crack down on "dark net" crimes. Qin An, director of the Institute of Cyberspace Strategy in China, said that at present, countries have made attempts in this regard, such as establishing a "dark net" space search engine based on threat intelligence clue mining, completing the detection and collection of "dark net" entries, links and contents, and trying to actively sniff "dark net", tracking "dark net" transaction data and reasonably mastering "dark net" network structure and data resources. Continue to map the "dark net" through technical means, mine threat information, and track and confront threats from the "dark net".

　　Perfecting the system and strengthening international cooperation are also important means to crack down on "dark net" crimes. On the level of international cooperation, Lu Chuanying, secretary-general of the Center for International Governance of Cyberspace of Shanghai Institute of International Studies, believes that the main problem at this level lies in the differences in policies, laws, systems and technologies in different countries and regions. Therefore, in order to eradicate the "dark net", a cancer that threatens all mankind, we should actively promote the establishment of a comprehensive international law and mechanism to deal with the "dark net" cyber crime on a global scale, and at the same time strengthen interaction and coordination with relevant UN mechanisms and issues. (Diao Shifeng)