Black bitcoin received

1. In June 2011, Symantec issued a warning that botnets are participating in bitcoin; mining & quot; In the middle. This can take up the computing power of the victim's computer, consume extra power, and cause the temperature of the host to rise. Later that month, ABC found an employee using the company's server to mine
some malware also make great use of the parallel computing power of graphics cards. In August 2011, botnet of bitcoin mining was discovered, and Mac OS X infected by Trojan horse was also discovered to mine bitcoin.
on June 19, 2011, security vulnerability of mt.gox (Magic: abbreviation of the gathering online exchange) bitcoin trading center caused the price of 1 bitcoin to drop to 1 cent (although other transactions were not affected). The reason is that a hacker stole the user's mtgox certificate from the computer infected with the Trojan horse, so he transferred bitcoin to his own account and sold it, resulting in a large number of "ask" requests at that price. A few minutes later, mtgox shut down and cancelled the abnormal transactions in the hacking incident, making the price of bitcoin rebound back to $15. In the end, the bitcoin exchange rate went back to what it was before the crash. Accounts equivalent to more than $8750000 were affected
in July 2011, the operator of bitomat, the world's third largest bitcoin trading center, announced the loss of access rights to the wallet.dat file that records 17000 bitcoins (about 220000 US dollars). At the same time, announced the decision to sell services to make up for the loss of users
in August 2011, mybitcoin, one of the processing centers of common bitcoin transactions, announced that it had been attacked by hackers and shut down. Involving 49% of customers' deposits, more than 78000 bitcoins (then equivalent to about $800000) are missing
in early August 2012, bitconica was sued in the San Francisco court for damages of about $460000. In 2012, bitconica was attacked twice by hackers, accused of ignoring the security of customers' funds and forging withdrawal applications
in late August 2012, bitcoin savings and trust was shut down by its owner, leaving about US $5.6 million in debt. At the same time, he was accused of operating the Ponzi scheme. In September 2012, the securities and Exchange Commission began to investigate the case
in September 2012, bitfloor trading center was also hacked, and 24000 bitcoins (about US $250000) were stolen. Bitfloor was suspended. Bitfloor resumed operations in the same month, and its founder said he had reported the theft to the FBI and that he was planning to compensate the victims, but the compensation schele was unclear
in June 2011, a hacker transferred 25000 bitcoins into his account, which is equivalent to 500000 US dollars. The whole transaction could not be traced. Although the owner of bitcoin announced the theft on the Internet, it was useless. The hacker became the first thief of bitcoin
in 2012, 46703 bitcoin worth US $228845 was stolen e to the disclosure of the super management password of the server of the website hosting provider linode. More than 43000 stolen bitcoins belong to bitcoinica, a bitcoin trading platform. Another 3094 bitcoins are owned by Marek palatinus, a Czech programmer. Gavin Andersen, the chief bitcoin programmer, also lost his five bitcoins.

2.

The account you receive bitcoin is your own bitcoin wallet address. It's different because you have created multiple bitcoin addresses. You can send the bitcoin from the address where you receive bitcoin to your original bitcoin wallet address. Let's take coinbase as an example to illustrate how to use bitcoin Wallet:

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register

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register an account first, which is equivalent to opening an account in a bank. Click sign up in the upper right corner to register an account. Enter your email and password on the registration page to register successfully

then, click accept and continue to accept the agreement

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receiving bitcoin

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after successful registration, you can sign in for account operation. You can select create new address in account settings / bitcoin addresses to select the address of each collection. Click Details on the right side of the newly created account to modify the label to mark the purpose of the address, and save changes to confirm the modification, so that you can clearly know what a certain payment is for

note: the 32 characters in the address are the address of each transaction, which can be sent to the person who wants to transfer bitcoin to you. Or enter the address where you are going to transfer bitcoin to complete the transfer operation. The transfer process may take some time

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send bitcoin

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of course, you can also transfer out bitcoin through send money in send / request. Click send money to enter the destination address (32 strings) in the dialog box, and enter the number of bitcoins to be transferred in the amount BTC. Of course, you can also write some information in the message. Then click the send money button to complete the transfer operation

3.

Bitcoin blackmail refers to an email received in the mailbox. The content of the email generally includes: malicious software on the computer has captured the recipient's indecent photos through the webcam, knows the recipient's real password, etc., which makes the recipient fear and demands to pay the sealing fee in the form of "bitcoin"

if the blackmailer passes the email, he will take the next step, and he does have a lot of important information. In any case, don't transfer bitcoin to blackmailers. It's a bottomless hole. It's a good choice to keep all the evidence and report to the police. The above personal opinions are welcome to be criticized and corrected. Agree with me, please click like before you go, thank you! Like me, please pay attention to me, thank you again

4. Bitcoin virus (bitcoin Trojan horse) & quot; Bitcoin blackmailer & quot; It was popular abroad in 2014, and was found in China in early 15 years. This kind of Trojan will encrypt 114 kinds of files in the infected computer, such as docx, PDF, xlsx, JPG and so on, so that it can not be opened normally, and pop up the window & quot; Blackmail & quot; Victim, ask victim to pay 3 bitcoin as & quot; Ransom;, According to the recent price comparison of bitcoin found by the reporter from the Internet, 3 bitcoin is about 5000 yuan or 6000 yuan. This kind of Trojan horse is generally spread through English mail, and the name of the Trojan horse program is usually English, which means & quot; Order & quot& quot; Proct details & quot; And use fax or form icon, which is very confusing. The recipient easily mistakenly thinks that it is a working file and clicks to run the Trojan horse program
in May 2017, computer network virus attacks have spread to 74 countries, including the United States, the United Kingdom, China, Russia, Spain, Italy, etc.

5.

Call the police. If you receive a similar e-mail, you can directly pull the sender into the blacklist, and report the e-mail, so that you will not receive such e-mail. In addition, if the e-mail box can, you can set a receiving rule, set sensitive words, and then do not accept such e-mail, which can help to avoid such e-mail. Do not click any link above to avoid being stolen

if the threat of extortion is violence, the perpetrator claims that it will be carried out in the future; The threat of kidnapping violence was implemented at that time and on the spot. The perpetrator of the crime of extortion does not abct the victim to hide and control, while the crime of kidnapping should abct the victim to hide and control

extended information:

the constituent elements of the crime of extortion:

1. Subjective elements

this crime shows direct intention in subjective aspect, and must have the purpose of illegally extorting other people's property. If the actor does not have this purpose, or the purpose of obtaining property is not illegal, for example, the creditor uses threatening language to urge the debtor to speed up the repayment in order to repay the long overe debt, it does not constitute the crime of extortion

The object of this crime is a complex object, which not only infringes the ownership of public and private property, but also endangers the personal rights or other rights and interests of others. This is one of the distinctive characteristics of this crime which is different from larceny and fraud. The object of this crime is public and private property

6. Don't worry about him
at first glance, it's a liar, just a new routine
now bitcoin is more than 80000. Think about it.

7.

at present, the vast majority of digital currency transactions are concted in exchanges. Among the numerous exchanges, bitfinex, binance, okex and so on are well-known

However, bitcoin and other digital currencies, as decentralized assets, have to be traded in a centralized exchange, which seems to have hidden contradictions and dangers

1. Problems and challenges of stock exchanges=“ //www.yuanxue365.com/en/img_fd039245d688d43fdf16c83b761ed21b0ff43bbf ">

in February 2014, Mt. GOx, the world's largest bitcoin exchange at that time, was stolen 850000 bitcoins, and the price of bitcoin suffered a" cliff "crash on that day. Later, it was revealed that Mt. GOx was in fact a thief, and only 7000 bitcoins were actually stolen

in August 2016, bitfinex, the largest U.S. dollar bitcoin trading platform, suffered a security vulnerability, resulting in the theft of 120000 bitcoins, which was worth $65 million at that time. If converted into the price in December 2017, it would be worth nearly $2 billion

on December 19, 2017, South Korea's youbit exchange was attacked by hackers and lost 4000 bitcoins, and the exchange declared bankruptcy

on December 21, 2017, the Ukrainian liqui exchange was stolen 60000 bitcoins, and the unit price of bitcoin plummeted by US $2000

in 2018, such a drama will only continue

in addition to the threat of hackers, traditional exchanges also have some inherent shortcomings, such as lack of supervision and inefficiency. The security of the exchange for investors can only rely on its own credit, and the cost of running is very low. The stock exchange is regulated at the national level, but there is no such sword of Damocles on the top of the digital currency exchange. Moreover, in an exchange, the same order can only be submitted to one exchange. After the user places an order, the funds used for the transaction will be frozen and can only wait for the completion or cancellation of the transaction. These are undoubtedly inefficient

All in all, the problems of exchanges are the problems of centralization

2. Decentralization of exchanges=“ //www.yuanxue365.com/en/img_86d6277f9e2f070889a173c9e224b899a801f257 ">

(1) the progress of the exchange itself

the upgrade of security means is various. At present, the best use is cold wallet, that is, to keep the digital currency in the offline U disk. At the end of 2017, when the YouTube exchange was attacked, 75% of its assets were withdrawn into the cold purse in time to avoid greater losses. However, it seems to be a helpless way to protect the online assets by offline means. Of course, there should be many other methods, which will not be repeated here

(2) the representative of cross ledger transaction is ripple network, and the operating company is ripple labs, which is a semi centralized system. Ripple is a decentralized clearing agreement. In order to solve the high cost and delay of inter-bank clearing, its base currency is XRP. Ripple network can connect all kinds of assets, such as US dollar, RMB, Japanese yen, bitcoin, etc. to its own network. In this system, U.S. dollars or bitcoin can be converted into reborn currency, and then reborn currency can circulate freely in the network, just as a highway is built between various assets. Due to the support of major banking institutions, the reborn currency achieved nearly 300 times growth in 2017

(3) decentralized exchange

some teams try to use blockchain technology to build a decentralized exchange. This kind of decentralized exchange, to some extent, is an extension of cross ledger trading

bitshares is the most representative of early rising projects. It builds a blockchain development platform with servers scattered all over the world. Even if some of them are attacked, the system will not collapse. Anyone can transfer money and borrow money freely on this platform, and can also quickly build a centralized exchange based on this platform. In order to ensure stable value, bitstocks also require three times of digital assets as collateral. At present, bitstocks are running fairly well

later, with the development of Ethereum and smart contract, the x x protocol came into being. This is an open protocol running in the Ethereum blockchain and a decentralized exchange in the Ethereum ecosystem. The agreement has attracted many investors. At present, it has completed financing and started to build open source software tools and infrastructure. Of course, there are many competitors. Ether Delta, IDEX and oasis DEX are trying to provide similar functions. Moreover, it is a smart contract system based on Ethereum, which only supports erc20 token. If other smart contract public chains start to rise, the demand will be reced

in addition, there are some teams that are entering, such as the domestic road seal agreement, looping (LRC) in English. They adopted a design similar to the X protocol, and also introced a fast payment function similar to the lightning network. It is characterized by trying to match multiple exchanges, the user's order can be broadcast to multiple exchanges, and completed by different exchanges. Moreover, the user can still use the account funds after placing an order, and the user's behavior of transferring part or all of the funds is equivalent to partial or total cancellation. To some extent, it improves the breadth and timeliness of the transaction. However, this system seems to have damaged the "power" of the existing exchanges. Whether we can persuade everyone to play together will be a difficult problem

At present, there is still a long way to go for the construction of decentralized exchange. In 3-5 years, traditional exchange will still be the main battlefield of digital currency

However, in the future, it is worth looking forward to let the decentralized digital currency get rid of the shackles of centralization

8.

The task of helping Zhang Peng is a fraud, and the "help" is a pyramid scheme“ "Bang Bei" is a virtual currency promoted by Hunan Shuoli Network Technology Co., Ltd. Yuhua District, Changsha City, the relevant departments have repeatedly visited the door to investigate, Hunan Shuoli has been asked to close down for rectification, to clear the funds

after receiving the report, the relevant departments of Changsha City took action quickly. On January 4, the financial office of Yuhua District, the Economic Investigation Brigade of Yuhua District and the instrial and commercial branch of Yuhua District interviewed the relevant responsible persons of Hunan Shuoli. Yuhua District relevant departments on the spot to Hunan Shuoli made a request: immediately stop business; The funds should be cleared quickly; The company shall not close down in the short term to ensure the stability of all investors; Promise not to engage in illegal operation<

Xu Longjian, the legal person of Hunan Shuoli, promised to rectify in place within the time limit, and handed in the explanation of business suspension and rectification on January 5, saying that he would uniformly force the repurchase of members' "help" to clear the funds and maintain the stability of members. Hunan Shuoli would stop all business until the whole meal was completed. As for the progress of Hunan Shuoli's rectification and liquidation, the relevant departments of Yuhua District government said that they would pay close attention to the developments to ensure regional financial security and social stability

extended materials:

the publicity of Bang is very popular, but after all, the essence cannot be changed. Many indivials and enterprises like to cheat under the guise of blockchain and virtual currency. Ban is also one of them. Why do you say that? Because China has repeatedly banned virtual currency. In fact, the publicity on these tall buildings, after the real masks are exposed, are so unbearable

on June 15, the monetary Bureau of the people's Bank of China issued a risk warning that the so-called "digital currency" launched by some institutions and enterprises and the so-called promotion of the central bank's issuance of digital currency may involve pyramid selling and fraud

First, we have not issued legal digital currency, nor authorized any institutions or enterprises to issue legal digital currency, and there is no promotion team. At present, the so-called "digital currency" in the market is not legal digital currency

Second, the so-called "digital currency" launched by some institutions and enterprises and the so-called promotion of the central bank's issuance of digital currency may involve pyramid selling and fraud. The general public should raise their risk awareness, invest rationally and prudently, and prevent the interests from being damaged

Thirdly, the legal currency of China is RMB. RMB shall be uniformly printed and issued by the people's Bank of China. No unit or indivial may refuse to pay all public and private debts within the territory of China in RMB. The general public should establish a correct concept of currency, take good care of RMB and jointly maintain the normal circulation order of RMB

9. no MLM is selling the concept and earning a head fee. The digital currency can be used to trade, it has its own value. There are a lot of people investing in digital currency now, but it is suggested to go to big trading platforms, such as hot money pro, which only has reliable digital currency online, so the risk can be reced.

10.

If you encounter bitcoin extortion email, you should first pay attention to the email title, form a good habit of reading the email title, and never open the email sent by unfamiliar people. If the unfortunate point opened, then do not follow the instructions of the swindler remittance, should immediately call the police, let the network police involved, so that we can quickly find criminals

bitcoin e-mail blackmail is really terrible, but we should calm down when we encounter bitcoin e-mail blackmail. Although this kind of blackmail fraud only exists on the network, it poses a threat to real property. We must deal with it carefully

extended information

bitcoin blackmail is a virus Trojan horse that will enter the mailbox. When users click on the email, they will find that the email page has a countdown

in fact, from the moment the email is opened, the user's computer is poisoned, and the virus has hijacked the computer. If you do not follow the prompts on the page to recharge and remit bitcoin, the computer will crash, and the data stored in the computer will be destroyed. In fact, there are many similar incidents of bitcoin blackmail, and most of the behind the scenes have been caught