Bitcoin world app server exception

1.

The virus in the "bitcoin virus" incident is known as "ransomware". By encrypting the files in the victim's computer, you can't open them completely to ask for ransom. This is a virus attack launched by lawless elements by using "eternal blue" leaked from NSA hacker's weapon library. It does not need any operation of users. As long as it is turned on and connected to the Internet, lawless elements can implant blackmail software into computers and servers

What's more terrible is that this is just the beginning. Now this blackmail virus has spread to all over the world, including many colleges and universities in China. You can see many students on the Internet showing pictures of their computers being attacked. I have to say that hackers are really well intentioned, even in simplified Chinese

2. The closing methods of port 445 are as follows:
1. Open control panel - system and security - Windows Firewall, and click on the left to start or close windows firewall
2. Select Start firewall and click OK
3. Click Advanced Settings
4. Click inbound rule and create new rule
5. Select port, next step
6. Specific local port, enter 445, next step
7. Select block connection, next step
8. Configuration file, select all, next step
9. Name, which can be entered at will and completed
XP system processing flow
1. Open the control panel, security center, windows firewall in turn, and select enable
2. Click start, run, enter CMD, and confirm to execute the following three commands: net stop RDR, net stop SRV, and net stop NetBt

3. First, open IE, click Tools, click Internet Options, click Advanced, click restore default settings, click save, exit, re open IE
Second, open IE, refresh more than five times
Third, open IE, click Tools, click Internet Options, click delete file, click Clear history, confirm, save, exit ie, re open ie
all the above three methods have been tried, but they are not enough. Look at the following three possibilities:
1. Network speed problem
2. Virus problem
3. Computer configuration speed problem
the following solutions:
1. Check and kill whether there is a virus in the safe mode,
2. Or re install the browser to see if there is a similar situation
3. Try to replace other browsers
4. Try to link your network cable with other computers. If there is a similar situation, it means that your network speed is a problem
5. The last move.. Repair the system
if the building owner says that it is not the above problem, it is possible that someone uses P2P terminator to control your network speed. In this case, you can take two solutions:
1. Download anti P2P terminator software and fight against the virus with poison
2. Use 360 antivirus software and browser and open 360 firewall to effectively resist the attack of controlling network speed

4. Abstract: a person named Satoshi Nakamoto posted a post on the P2P foundation website, saying that he has developed an open-source P2P (peer-to-peer) e-cash system called bitcoin, which is completely decentralized. There is no central server or trustee, and everything is based on participants. Bitcoin Bitcoin is a kind of virtual currency in the form of P2P. Point to point transmission means a decentralized payment system. Bitcoin does not rely on specific currency institutions to issue, it is generated through a large number of calculations of specific algorithms. Bitcoin economy uses a distributed database composed of many nodes in the whole P2P network to confirm and record all transactions. The decentralized nature and algorithm of P2P can ensure that it is impossible to artificially manipulate the value of bitcoin through mass proction. The design based on cryptography can make bitcoin only be transferred or paid by the real owner. This also ensures the anonymity of money ownership and circulation transactions. Bitcoin is a kind of network virtual currency, similar to Tencent's q-coin. You can use bitcoin to buy some virtual items, such as clothes, hats, equipment, etc. in online games. As long as someone accepts it, you can also use bitcoin to buy real-life items. The biggest difference between bitcoin and other virtual currencies is that the total amount of bitcoin is very limited and it has a strong scarcity. The monetary system has no more than 10.5 million in the first four years, and the total number after that will be permanently limited to 21 million. Another point is that you can use computers to make bitcoin. Bitcoin is an electronic currency proced by open source P2P software. Bitcoin has also been paraphrased as "bitgold". The concept of virtual currency bitcoin was first proposed by Satoshi Nakamoto in 2009. Now bitcoin is also used to refer to bitcoin's open source software designed and released according to the ideas of Satoshi Nakamoto and the P2P network built on it. Unlike most currencies, bitcoin does not rely on a specific central issuing institution, but uses a distributed database throughout the P2P network nodes to record currency transactions, and uses cryptography design to ensure the security of all aspects of currency circulation. For example, bitcoin can only be used by its real owner, and only once, after the payment is completed, the original owner loses the ownership of the bitcoin. Feature bitcoin is designed to allow anonymous ownership and use rights. Bitcoin can be stored in personal computer in the form of computer file (wallet) or in a third-party hosting service. No matter how it is saved, bitcoin can be sent to anyone on the Internet through its address. The distributed characteristics of P2P and the design of no central management mechanism ensure that no organization can manipulate the value of bitcoin or create inflation.

5. On December 5, 2013, notice of the people's Bank of China Ministry of instry and information technology, China Banking Regulatory Commission, China Securities Regulatory Commission and China Insurance Regulatory Commission on preventing bitcoin risk: bitcoin is a specific virtual commodity; Bitcoin trading is a kind of commodity trading on the Internet. Ordinary people have the freedom to participate in it at their own risk
on September 4, 2017, notice of the people's Bank of China Central Network Information Office, Ministry of instry and information technology, State Administration for Instry and commerce, China Banking Regulatory Commission, China Securities Regulatory Commission and China Insurance Regulatory Commission on preventing the risk of token issuance financing: it is prohibited to engage in token issuance financing activities (ICO); The trading platform shall not engage in the exchange business between legal tender and token, or virtual currency, or buy or sell token or virtual currency as a central counter party, or provide pricing, information intermediary and other services for token or virtual currency
according to the monitoring of financial regulatory authorities, recently, some lawless elements hype "virtual currency" under the banner of blockchain. Therefore, China Internet Finance Association issued "risk tips on preventing ICO and" virtual currency "trading activities in the name of blockchain".

6. I'm sorry to tell you that it did disappear

7. If the software is updated, the network display is slow. You can go to the official website to see if there is an update package. Generally, the app and the network do not support this. In addition, there is a problem with your network itself. A series of problems caused by poor signal will appear, and the software can't be opened. This kind of problem is common in general software, Change your mobile phone and download it to see if it's the same problem, then you'll know it's the same problem.

8. The mobile app of the trading platform can't be opened. It may be that the platform is upgrading and the backstage staff are working, so the login is not good. Just log in later