区块链技术带来风险的原因,区块链技术带来风险有哪些

区块链技术是一种基于分布式账本技术，具有去中心化、不可篡改等特点，可以用来构建可信赖的数据记录和交易系统。但是，它也带来了一些风险。下面我们将讨论三个与区块链技术相关的风险：安全性风险、技术风险和法律风险。

安全性风险：安全性风险是指区块链技术可能会受到的安全威胁。由于区块链技术是一种分布式技术，所以它的安全性要比传统的中心化系统更加可靠。但是，由于区块链技术的特殊性，它也可能会受到一些安全攻击。例如，恶意节点可能会破坏区块链网络的完整性，从而导致区块链系统的安全性受到威胁。

技术风险：技术风险是指区块链技术可能会带来的技术问题。由于区块链技术是一种新兴技术，它的发展速度比传统技术要快得多。而由于它的发展速度太快，所以它也可能会带来一些技术问题。例如，区块链技术的可扩展性可能会受到限制，从而导致其实现效率不够高。此外，由于区块链技术的复杂性，它也可能会出现一些技术缺陷，从而导致数据安全性受到威胁。

法律风险：法律风险是指区块链技术可能会带来的法律问题。由于区块链技术是一种新兴技术，它的发展速度比传统技术要快得多，而且它的应用场景也比传统技术更加广泛。因此，它也可能会带来一些法律问题。例如，由于区块链技术可以实现去中心化，所以它可能会与一些现行法律发生冲突，从而导致一些法律风险。此外，由于区块链技术的特殊性，它也可能会涉及一些法律上的不确定性，从而导致法律风险的增加。

从上面可以看出，区块链技术可能会带来安全性风险、技术风险和法律风险。因此，在使用区块链技术时，我们需要加强对这些风险的控制，以确保区块链系统的可靠性和安全性。

⑴ Is blockchain useful? What is the impact and prospects of blockchain?

I believe everyone is no longer unfamiliar with the emerging technology of blockchain, because this It is the most popular topic at the moment. Many big guys from different industries are analyzing its role and prospects. Today we also do some research on the blockchain. Is the blockchain useful? And what are the benefits of the blockchain? I hope this analysis of the impact and prospects can help everyone.
Is blockchain useful?
1. Banking: As a digital, secure and interference-proof account, blockchain realizes the core function of the banking industry: a safe storage and transfer center of value. In other words, in the next few years, a wave of companies based on blockchain technology may affect the banking industry.
2. Payment and transfer: Blockchain technology can avoid complicated systems and create a more direct payment process between the payer and the payee. Whether it is a domestic transfer or a cross-border transfer, this method has its advantages. Low price, fast, and no intermediate handling fees.
3. Network security: Although the blockchain system is public, its verification, sending and other data exchange processes use advanced encryption technology. This technology not only ensures the correct source of data, but also ensures that the data is not intercepted during the process. If blockchain technology is more widely used, the probability of being attacked by hackers may also decrease, so people think that blockchain systems are more stable than traditional systems. One of the reasons why blockchain systems can reduce traditional network security risks is that they eliminate the need for middlemen.
4. Election: Everyone's vote "can never be modified or deleted by us - programmers, school administrators or students."
5. Smart contract: Smart contracts are actually on another object. A computer program that functions on the go. Like ordinary computer programs, smart contracts are also an "if-then" function, but blockchain technology enables the automatic filling of these "contracts" without manual intervention. Such contracts may eventually replace the legal merger industry's core business of drafting and managing contracts in both commercial and civil areas.
6. Stock trading: For many years, companies have been trying to simplify the process of buying, selling and trading stocks. Emerging blockchain technology startups believe they can go beyond the past, automating the entire process, improving security and efficiency.
What impact and prospects does blockchain have?
1. The dual impact of bringing wealth and risk:
The difference between blockchain technology and traditional Internet technology is that it chooses the high-risk financial industry as the entry point, but the financial field is full of Areas with many obstacles. Such direct entry has a dual impact: on the one hand, it can bring wealth effects to entrepreneurs relatively quickly; on the other hand, various risks will also come directly and violently.
2. Improve efficiency and reduce costs:
For physical finance, blockchain can maintain the fidelity in the process of transmitting information, such as personal credit information and other data, thus avoiding many transaction costs., improve efficiency on a large scale, this is the positive meaning it brings.
3. Control financial risks early and small:
Blockchain is cooperating with the innovation of digital currency, preventing over-insurance in the insurance industry, over-lending in bank mutual funds loans, and the integration of supply chain finance. , promote electronic identity recognition, etc., applicable to many industries and fields. In terms of financial security, many companies have also cooperated with regulatory authorities to build regulatory technology systems to help regulatory authorities monitor and provide early warning for the risks of Internet financial companies, so as to control financial risks early and at an early stage.
4. The owner of the data should be the user himself:
Blockchain is a technology worthy of attention, and it has relevant layouts in its own business and investment. Bitcoin and other electronic currencies are applications based on blockchain technology. They have certain currency functions and have certain use value. However, the main problem now is that the gap between the use value and the transaction price is too big. . ICO is a financing business model.
5. The darkest stage contains the most opportunities:
The darkest stage often contains the most opportunities. The application of blockchain is far more than just monetary and financial. For example, big data can be applied to the entire medical industry in the future. health field. If medical records and diagnosis data are shared to all different medical systems through the big data blockchain, the efficiency of treating diseases and saving lives can be greatly improved.
The editor believes that the correct development prospect of blockchain is to "talk less about financial innovation, focus more on financial security, focus more on inclusive finance, and do more on medical care, health, and environmental protection."
The above is the blockchain brought to you by the editor. Is it useful? What impact and prospects does blockchain have? all content.

⑵ Is blockchain a scam?

Blockchain technology itself is not a scam, but it does not rule out that some people use blockchain as a cover to commit scams. Several problems exist in blockchain: 1. The problem of excessive blockchain size. With the development of blockchain, the volume of blockchain data stored by nodes will become larger and larger, and the storage and computing burden will become heavier and heavier. Taking the Bitcoin blockchain as an example, the size of its complete data currently reaches about 71GB. If a user uses the Bitcoin Core client to synchronize data, it may not be possible to complete the synchronization for three days and three nights. Moreover, the data of the blockchain The volume is still increasing, which brings a great threshold to the operation of the Bitcoin Core client. 2. The problem of blockchain data confirmation time. The current blockchain system, especially the financial blockchain system, has the problem of long data confirmation time. Taking the Bitcoin blockchain as an example, the current confirmation time of a Bitcoin transaction takes about 10 minutes. In the case of 6 confirmations, you need to wait for about 1 hour. Of course, for credit card transactions, the confirmation time is 2 to 3 days. Bitcoin has made great progress, but it is still far from the ideal state. 3. Dealing with the problem of transaction frequency The blockchain system faces the problem of too low transaction frequency. Taking the Bitcoin blockchain as an example, the average size of each transaction is about 250 bytes. If the block size is limited to 1MB,Then the number of transactions that can be accommodated is 4,000. Calculated based on the rate of generating one block every 10 minutes, 144 blocks can be generated every day, which can accommodate 576,000 transactions. Divided by the number of seconds per day, 86,400, the Bitcoin blockchain can process a maximum of 6.67 transactions per second. Currently, the actual daily transaction volume on the Bitcoin blockchain is close to the system bottleneck (picture). If the expansion problem is not resolved, it may cause congestion and delays in a large number of transactions. Average number of transactions in Bitcoin blocks (Source: Block Yuan) In comparison, Paypal's overall number of transactions in the third quarter of 2013 was 729 million, with an average of 93.75 transactions per second. Information from the official website of VISA, the world's largest payment card, shows that VisaNet achieved a processing capacity of 47,000 transactions per second in a 2013 test. Compared with several major payment networks such as Alipay, the Bitcoin blockchain is more like a newborn baby in terms of transaction processing frequency. Of course, this was also an early deliberate design by Satoshi Nakamoto. The Bitcoin block size was limited to 1MB to avoid the malicious behavior of rogue miners and adverse effects on people. The reason why the Bitcoin blockchain payment network The reason why it has grown to be worth billions of dollars today lies in its decentralization. 4. The development of blockchain is restricted by the current system. On the one hand, the decentralized and autonomous characteristics of blockchain dilute the concept of national supervision and have an impact on the current system. For example, digital currencies represented by Bitcoin not only pose a challenge to the country's right to issue currency, but also affect the transmission effect of monetary policy, weakening the central bank's ability to regulate the economy, causing monetary authorities to remain cautious about the development of digital currencies. On the other hand, regulatory authorities also lack full understanding and expectations of this new technology, and the establishment of laws and systems may lag behind, resulting in a lack of necessary institutional norms and legal protection for economic activities related to the use of blockchain, which inadvertently increases reduce the risks of market entities. 5. The integration cost of blockchain technology and existing systems is relatively high. For any innovation, existing institutions must ensure that it can not only create economic benefits, but also comply with regulatory requirements and connect with traditional infrastructure. Especially when deploying a new basic system, the cost of time, manpower, and material resources is very large, and the resistance encountered within existing traditional organizations is also not small. Of course, the existence of problems cannot hinder the development of blockchain. The proposal and in-depth research of technologies such as simple payment verification, side chain, and lightning network protocols have provided ideas for solving the above problems.
Legal basis: "Criminal Law"
Article 266 [Crime of Fraud] Whoever defrauds public or private property, and the amount is relatively large, shall be sentenced to fixed-term imprisonment of not more than three years, criminal detention or public surveillance, and shall be concurrently or solely punished fine; if the amount is huge or there are other serious circumstances, he shall be sentenced to fixed-term imprisonment of not less than three years but not more than ten years, and shall also be fined; if the amount is particularly huge or there are other particularly serious circumstances, he shall be sentenced to fixed-term imprisonment of not less than ten years or life imprisonment and shall also be fined or Confiscation of property. If this law provides otherwise, the provisions shall prevail.

⑶ How is the security of blockchain?What are the risks of blockchain

The hottest topic at the beginning of the new year is blockchain, but there are still many people who are skeptical about its security and risks. So How secure is blockchain? What are the risks of blockchain? Below we will give you the answers one by one. I hope it will be helpful to you after reading them.
How is the security of blockchain Anyuan?
First of all, blockchain is a distributed database technology. Distributed technology mainly refers to storage architecture. The distributed architecture adopted by the blockchain not only stores the ledger data on each node, but also each node must contain the data of the entire ledger. This completely distributed architecture brings extremely high security, and no one can destroy all nodes at the same time.
Secondly, blockchain technology can achieve tamper resistance through "blocks" and "chains". The unit of data storage in the blockchain is the block. When each block is generated, it must contain the unique "characteristic value" of the previous block (which can be regarded as the ID card of the block). Each block is generated strictly according to the The order of time is lined up to form a "chain".
Security is a major feature of blockchain technology. However, from the perspective of privacy protection, the block chain emphasizes openness and transparency, and any node has the right to operate according to the consensus algorithm, so it is not suitable for scenarios where data privacy needs to be protected.
What are the risks of blockchain?
1. Technical risks: For example, the launch of Ethereum was once popular, but because it is a digital currency with smart contracts, it brings the risk of hacker attacks due to possible loopholes in smart contracts. THEDAO, the largest crowdfunding project in Ethereum, was hacked and lost more than $60 million.
2. Legal risks: The legality issues of digital currency issuance, notarization and confirmation of rights, and legality issues of proof, including legality issues of smart contracts, digital bills, accounting and liquidation, and equity crowdfunding, are currently in my country and The rest of the world is still legally blank.
3. Criminal risks: Using digital currencies to abscond with the money, using digital currencies to launder money and illegal gambling, using smart contracts and digital bills designed to defraud profits, using blockchain technology to commit anonymous crimes, etc. Due to the current regulatory gap, there may be huge criminal risks.
The above is what the editor brings to you. How about the security of blockchain? What are the risks of blockchain? all content.

⑷ How to detect the risk level of blockchain smart contracts

With the acceleration of the digital transformation of Shanghai city, blockchain technology has been widely used in government affairs, finance, logistics, justice, etc. fields have been deeply applied. During the application process, not only new business forms and business models have been born, but also many security issues have arisen, so security supervision is particularly important. As one of the important means of supervision, security evaluation has become a focus of many blockchain R&D manufacturers and application companies. This article talks about some of our exploration and practice on the blockchain compliance security assessment that everyone is concerned about.
1. Blockchain Technology Evaluation
AreaBlockchain technology evaluation is generally divided into functional testing, performance testing and security evaluation.
1. Functional testing
Functional testing is a test of the basic functions supported by the underlying blockchain system, with the purpose of measuring the capabilities of the underlying blockchain system.
Blockchain functional testing is mainly based on GB/T 25000.10-2016 "System and Software Quality Requirements and Evaluation (SQuaRE) Part 10: System and Software Quality Model", GB/T 25000.51-2016 "System and Software Quality" Requirements and Evaluation (SQuaRE) Part 51: Quality Requirements and Testing Details for Ready to Use Software Products (RUSP)" and other standards to verify whether the software under test meets the requirements of relevant test standards.
Blockchain function testing specifically includes networking methods and communication, data storage and transmission, encryption module availability, consensus function and fault tolerance, smart contract function, system management stability, chain stability, privacy protection, and interoperability , account and transaction types, private key management solutions, audit management and other modules.
2. Performance testing
Performance testing is a type of test implemented and executed to describe the performance-related characteristics of the test object and evaluate it. Most of them are used in project acceptance evaluation to verify the established Whether the technical indicators are completed.
Blockchain performance testing specifically includes high-concurrency stress test scenarios, peak impact test scenarios, long-term stable operation test scenarios, query test scenarios and other modules.
3. Security Assessment
Blockchain security assessment mainly conducts security testing and evaluation of account data, cryptography mechanisms, consensus mechanisms, smart contracts, etc.
The main basis for blockchain security evaluation is "DB31/T 1331-2021 General Requirements for Blockchain Technology Security". You can also refer to standards such as "JR/T 0193-2020 Blockchain Technology Financial Application Assessment Rules" and "JR/T 0184-2020 Financial Distributed Ledger Technology Security Specifications" based on actual testing needs.
Blockchain security assessment specifically includes storage, network, computing, consensus mechanism, cryptography mechanism, timing mechanism, personal information protection, networking mechanism, smart contracts, services and access, etc.
2. Blockchain Compliance Security Assessment
Blockchain compliance security assessment generally includes “Blockchain Information Service Security Assessment”, “Network Security Level Protection Assessment” and “Special Funding Projects” "Acceptance Evaluation" three categories.
1. Blockchain information service security assessment
Blockchain information service security assessment is mainly based on the "Blockchain Information Service Management Regulations" issued by the Cyberspace Administration of China on January 10, 2019 (hereinafter referred to as "Regulations") and refer to the national blockchain standard "Blockchain Information Service Security Specification (Draft for Comments)".
The "Regulations" aim to clarify the information security management responsibilities of blockchain information service providers, standardize and promote the development of blockchain technology and related servicesHealthy development, avoiding the security risks of blockchain information services, and providing effective legal basis for the provision, use and management of blockchain information services. Article 9 of the "Regulations" states: Blockchain information service providers that develop and launch new products, new applications, and new functions must report to the national and provincial, autonomous region, and municipality Internet Information Offices for security assessment in accordance with relevant regulations.
The "Blockchain Information Service Security Specification" is a construction and preparation project led by the Institute of Information Engineering of the Chinese Academy of Sciences and jointly participated by Zhejiang University, China Electronics Technology Standardization Institute, Shanghai Information Security Evaluation and Certification Center and other units. National standards for evaluating the security capabilities of blockchain information services. The "Blockchain Information Service Security Specification" stipulates the security requirements that blockchain information service providers of alliance chains and private chains should meet, including security technical requirements and security assurance requirements as well as corresponding test and evaluation methods, and is suitable for guiding blockchain Chain information service security assessment and blockchain information service security construction. The security technical requirements and guarantee requirements framework proposed by the standard are as follows:
Figure 1 Blockchain information service security requirements model
2. Network security level protection evaluation
The main basis for network security level protection evaluation includes "GB/T 22239-2019 Basic Requirements for Network Security Level Protection" and "GB/T 28448-2019 Network Security Level Protection Evaluation Requirements".
As an emerging information technology, the application system built by blockchain is also an object of level protection and needs to be evaluated for level protection in accordance with regulations. The general requirements for level protection security evaluation are applicable to the evaluation of the infrastructure part of the blockchain, but currently there are no specific security requirements for the blockchain. Therefore, the expansion requirements for blockchain security evaluation still need to be further explored and studied.
3. Special fund project acceptance evaluation
According to the relevant regulations of the Municipal Economic and Information Technology Commission, information technology special fund projects are required to issue a safety evaluation report during project acceptance. The acceptance evaluation of blockchain application projects will be carried out in accordance with Shanghai’s latest blockchain local standard "DB31/T 1331-2021 General Requirements for Blockchain Technology Security".
3. Exploration and practice of blockchain security assessment
1. Standard preparation
Shanghai Assessment Center actively participates in the preparation of blockchain standards. Led by the Shanghai Evaluation Center, Suzhou Tongji Blockchain Research Institute Co., Ltd., Shanghai Qiyin Information Technology Co., Ltd., Shanghai Moheng Network Technology Co., Ltd., the First Research Institute of Telecommunications Science and Technology and other units participated in the preparation of the blockchain local standard " DB31/T 1331-2021 "General Requirements for Blockchain Technology Security" was officially released in December 2021 and will be officially implemented on March 1 this year. The blockchain national standard "Blockchain Information Service Security Specification", which the Shanghai Assessment Center participated in the preparation of, is in the stage of soliciting opinions.
At the same time, the assessment center also participated in the preparation of the junior and intermediate blockchain engineering technicians organized by the Ministry of Human Resources and Social Security and led by Tongji University.Level textbook, responsible for compiling the chapter content of "Testing the Blockchain System".
2. Project Practice
In recent years, the Shanghai Assessment Center has conducted a large number of blockchain security assessment practices based on relevant technical standards, including grade protection assessment, information service security assessment, project security assessment, etc. In the evaluation practice, the main security issues discovered are as follows:
Table 1 Blockchain is mainly a security issue
Serial number
Evaluation items
Problem description
1
Consensus Algorithm
The consensus algorithm uses Kafka or Raft consensus and does not support Byzantine fault tolerance or tolerate malicious node behavior.
2
On-chain data
On-chain sensitive information is not encrypted, and all data on the chain can be accessed through the query interface or blockchain browser.
3
Cryptographic Algorithm
The random numbers used in the cryptographic algorithm do not meet the randomness requirements of GB/T 32915-2016.
4
Node Protection
For the alliance chain, security protection measures failed to be configured for the area where the node server is located.
5
Communication transmission
When communicating between nodes, the blockchain and upper-layer applications, no secure information transmission channel has been established.
6
Consensus Algorithm
The number of nodes deployed in the system is small, and sometimes the number of fault-tolerant nodes required by the consensus algorithm is not even reached.
7
Smart Contract
The operation of the smart contract is not monitored, and problems that arise during the operation of the smart contract cannot be discovered and dealt with in a timely manner.
8
Services and Access
Upper-layer applications have access control flaws such as unauthorized and unauthorized access, leading to business confusion and data leakage.
9
Smart Contract
Smart contract coding is not standardized. When an error occurs in the smart contract, the smart contract freezing function is not provided.
10
Smart Contract
The running environment of smart contracts is not isolated from the outside, and there is a risk of external attacks.
3. Tool Application
When the evaluation center organized and compiled the "DB31/T 1331-2021 General Requirements for Blockchain Technology Security", it has considered the connection needs with the graded protection evaluation. The "infrastructure layer" security in DB31/T 1331 is consistent with the relevant requirements of the secure physical environment, secure communication network, security area boundary, secure computing environment, security management center, etc. of level protection, "protocol layer security", "extension layer" "Security" more reflects the unique security protection requirements of the blockchain.
Based on the relevant security requirements of DB31/T 1331, the assessment center is organizing and compiling extended blockchain assessment requirements. The relevant results will be applied to the network security level protection assessment tool - Assessment Expert. By then, those who use the "Evaluation Expert" software willThe assessment agency can carry out blockchain security assessments accurately, standardly and efficiently, discover blockchain security risks, and put forward corresponding rectification suggestions

⑸ Does the blockchain have compliance risks

Blockchain technology itself does not violate any laws and regulations, so there is no compliance risk. However, in the actual application process, enterprises or individuals using blockchain technology need to comply with relevant legal and regulatory requirements.
For example, in China, using blockchain technology to conduct financial transactions or raise funds needs to comply with relevant laws and regulatory policies. In addition, if users' sensitive personal information is retained on the blockchain, it must also comply with relevant laws and regulations such as data protection.
Therefore, enterprises and individuals who adopt blockchain technology in field applications not only need to understand and comply with existing legal operations and regulations, but also need to pay close attention to the development trends of technology and regulations and make timely decisions. Adjustments and changes accordingly. Only by operating and conducting business in compliance with regulations can enterprises develop better and gain lasting competitive advantages.

⑹ Is blockchain safe?

Hi, everyone, I am your Q&A assistant—Zi Xiaochen. Recently, blockchain resistance has been widely concerned and discussed. But there are many people who don’t know much about its safety. So today we will talk about the security issues of blockchain.
First of all, would you like to hear an easy-to-understand metaphor? A friend of mine joked: "Blockchain is like a password lock. Without a password, no one can open it." Although this is simple and interesting, it makes a lot of sense. Since the blockchain uses distributed ledger technology, data is stored in a huge network, and the transmission between each node uses asymmetric encryption, the blockchain has extremely high security, and third-party attacks are very vulnerable. difficult.
Secondly, of course there are some security issues that need attention. For example, hacker attack methods such as "51% attack" can pose a threat to the blockchain. In addition, there are also security risks in virtual currency trading venues, such as Bitcoin exchanges, and you need to pay attention to precautions. Therefore, when choosing a blockchain platform or participating in virtual currency transactions, you need to know more and consider carefully to avoid losses.
In short, blockchain is an open technology, which has huge advantages in ensuring data security and preventing tampering. But we also need to be alert to potential security risks and choose reliable platforms and exchanges to participate in cryptocurrency investments.
I hope my answer can help you better understand the blockchain and its security issues. If you have any questions or want to share your experience, please feel free to message me privately! Finally, don’t forget to like, comment and forward, follow my articles, more content is waiting for you!

⑺ What are the risks of blockchain transactions

When conducting blockchain transactions, the three most catastrophic risks that need attention are (in order of severity from high to low): The biggest risk of personal risk, platform risk and policy risk: Personal risk If personal risk is not well controlled, it mayEncounter: 1. Passwords and private keys are stolen, and all digital assets in wallets and trading platforms are lost (cannot be retrieved) 2. Your information will be sold by underground black industries, with almost no privacy 3. If you are If other places (banks, securities trading platforms) use the same or similar passwords, assets elsewhere will also be stolen. How to avoid personal risks: increase password strength, do not reuse passwords, do not send passwords online...Do not run naked on your computer (not installed) Security and anti-virus software), do not go to messy websites ("pornographic, gambling and drug" websites are the hardest hit areas for Trojan viruses) All necessary