360 blockchain Lab

1.

Recently, Vulcan team of 360 company found a series of high-risk security vulnerabilities in EOS, a blockchain platform. It is verified that some of the vulnerabilities can remotely execute arbitrary code on EOS nodes, that is, they can directly control and take over all nodes running on EOS through remote attacks

In the early morning of May 29, 360 reported this kind of vulnerability to EOS official for the first time, and assisted it to repair the security risks. The person in charge of the EOS network said that the EOS network will not be officially launched until these problems are fixed

EOS super node attack: the virtual currency transaction is completely controlled

in the attack, the attacker will construct and publish a smart contract containing malicious code, and the EOS super node will execute the malicious contract and trigger the security vulnerability. The attacker then uses the super node to pack the malicious contract into a new block, resulting in the remote control of all nodes in the network (alternative super node, exchange recharge withdrawal node, digital currency wallet server node, etc.)

because the system of the node has been completely controlled, the attacker can "do whatever he wants", such as stealing the key of the EOS super node and controlling the virtual currency transaction of the EOS network; Obtain other financial and privacy data in the participating node system of EOS network, such as digital currency in the exchange, user key stored in the wallet, key user information and privacy data, etc

What's more, an attacker can turn a node in the EOS network into a member of a botnet, launch a network attack, or become a free "miner" to extract other digital currency

source: Science and Technology News

2. The prospect of the virtual money market is very good, but there are also many people who are cheated. For example, bitcoin is bought by many websites, and you will find that there are no differences, including the trading websites. But after three to five months of observation, you will find that many websites can't be opened, because such websites only belong to third-party platforms, similar to intermediaries. They control your bitcoin holdings and your personal information. The personal holdings you verify are all virtual from the website, and you will be given money when you sell them, but once this website is saturated, Then you can't open this website any more. So choose carefully.

3. Introction: keyun blockchain is a blockchain technology and wearable proct R & D company. The company will set up a blockchain research laboratory, which will promote the R & D and application of blockchain technology in the fields of chronic diseases, sports and health management, so that its technology can be applied to intelligent wearable devices and medical devices
legal representative: Tan Yi
time of establishment: July 6, 2011
registered capital: 15.19188 million RMB
business registration number: 110000450177219
enterprise type: limited liability company (sole proprietorship of natural person)
address: 18-19c, block B, 18-19, building 1, No.48, Beisanhuan West Road, Haidian District, Beijing (residential)

4. Classification and application of blockchain:
1. According to different scenarios, design systems and attribution, blockchain is generally divided into three categories: public chain (public service), private chain (focusing on the application of an enterprise or instry) and alliance chain (generally belonging to an instry or a supply chain)
2. It is basically divided into three kinds of applications:
blockchain applications of well-known enterprises: (Netease blockchain cat (game), thunderbolt chain customer, storm's cool broadcast cloud (BFC points), Renren's social rrcoin, Meitu's e-commerce + blockchain, 360's router, cheetah and other well-known enterprises)
start up companies based on blockchain (Ethernet wallet, Babbitt, fire coin)<
social public applications (the bank has set up a research and development laboratory)
current market situation and development of blockchain:
currently, blockchain applications in the market still focus on issuing "token", realizing "point management"
, pet games, etc., with relatively single functions, and the data of blockchain related apps is even less, and more of them are financial apps.

5. B91 is not bad, do yellow pages, more complete information. If you are new to blockchain, their website is a relatively comprehensive and complete blockchain database, which is more suitable for you to use when looking for some projects and services.

6.

It is an indisputable fact that qubu app is suspected of pyramid selling, and qubu's making money is unreliable, so it is not safe

interesting step mode: using blockchain technology to calculate the output of candy based on human movement, participants can proce candy at every step. Candy is very rare and valuable at present. Members feel that candy is valuable, they will buy and sell candy to get cash income, and the platform will charge a handling fee for each transaction. Participants can raise the membership level to ensure more people to participate

Hunan qubu Network Technology Co., Ltd. is suspected of illegal pyramid selling, illegal fund-raising, amount fraud and other illegal acts, and has been put on file for investigation by relevant units. In early August of this year, the official account of the WeChat public warning by the police of Bole was very risky. p>

7. The maximum computing power is 68th / s. Shenma M20S
because the mining machine has a service life, in order to ensure that the computing power does not decline, it only provides a 2-year lease term

8. Blockchain has been applied in many fields, such as government affairs, Internet of things, pension and so on. For example, bat, a well-known big company, is also studying and applying blockchain technology

9. Blockchain 360 blockchain is a fast-moving technology, which fundamentally changes finance, supply chain, medicine, insurance, law and commerce. Join the host, Bryant Nielson, and he just

10. Introction: Cactus artificial intelligence laboratory takes Internet innovation mode software procts and solutions as the core, focusing on the application and promotion of blockchain matching system and blockchain clearing system. The main R & D business is software development and application of artificial intelligence, big data, blockchain, biometrics and Internet of things
legal representative: Chen a Peng
time of establishment: July 7, 2014
registered capital: RMB 100 million
business registration number: 440307109790802
enterprise type: limited liability company (solely owned by natural person)
address: 2901, 29 / F, building B, Xinghe world, No.1 Yabao Road, Bantian street, Longgang District, Shenzhen City