The news of stealing electricity to dig bitcoin five years ago
stolen
mark kalpler, chief executive of mt.gox, bowed his apology at a news conference held in Tokyo yesterday, saying that "the loss of bitcoin is e to a loophole in the company's system"
a lawyer for Mt. GOx said that almost all the bitcoins traded on the platform were stolen, including about 750000 bitcoins in the user's trading account and about 100000 bitcoins in Mt. GOx's own account. According to the trading on February 28, the loss is estimated to be about $467 million
according to media reports, mt.gox trading platform had more than 1 million accounts at its peak, mainly from customers outside Japan, including many users trading more than US $10000. Some bitcoin investors have rushed to Tokyo from overseas in an attempt to recover trading funds from Mt. GOx
on February 7, e to hacker attacks, mt.gox temporarily stopped the bitcoin extraction business, causing transaction confusion and user dissatisfaction. From the noon of February 25, users cannot log in to mt.gox trading platform. The home page of the website then pasted a "notice to customers" to suspend all transactions
Li, a native of Hefei, spent 140000 yuan to buy 124 bitcoins in October this year. Afterwards, Li joined some chat groups of bitcoin players to pay close attention to the bitcoin market. On October 22, a person named Michael in the group took the initiative to chat with Li and asked him if he was mining“ I won't, and I won't get any money. " Mr. Li replied. Michael repeatedly urged Li to have a try and sent him a "mining tool", claiming that he could use the tool to dig more bitcoin. In the subsequent chat, Michael constantly reminds Li to put bitcoin in his wallet, saying that the trading website is not safe“ From time to time, there are news that trading websites are closing down and running away. What he said is quite reasonable, so I believe him. " Li told Anhui Business Daily
100 bitcoins disappeared
Li received and installed mining tools. On the evening of October 26, he was inced by Michael to put 100 bitcoins in his wallet. However, when the bitcoin in the E-wallet just reached 100, it suddenly disappeared. Li suddenly panic God, and then contact Michael, the convenience of invisible disappeared
Li told reporters that at present, a bitcoin costs about 5000 or 6000 yuan, and 100 bitcoins are worth 500000 or 600000 yuan. Afterwards, Li reported the case to the police. However, to Li's disappointment, because bitcoin is a virtual currency, there is no relevant domestic law to regulate and protect its transactions. The police did not file a case“ Now, this man named Michael is still active on the Internet. He's just taking advantage of the law. " Li told Anhui Business Daily
there is a Trojan horse in "mining tools"
How could Li's bitcoin disappear? 360 security engineer contacted him and tested Michael's "mining tool", and found that this tool is a very popular "bitcoin robber" Trojan horse this year. According to the analysis of 360 security center, most of the "bitcoin thieves" Trojans are disguised as mining tools, simplified wallets and other compressed files. Once a player is recruited, the Trojan will automatically search for bitcoin wallets and steal them through e-mail, hacker remote control and other means.
previously, graphics cards were sold out because of the strong purchase of gold miners. The algorithm design of bitcoin is more and more difficult to dig. Therefore, the investment to dig the same bitcoin now is many times higher than a few years ago. Since the "mining" incident in Daqing Oilfield was exposed, the local police have counted the number. The average electricity cost of the mining machine seized is close to 500000 yuan in one month, and if it steals electricity, it is equivalent to making 500000 yuan in vain.
It's not against the law
The laws and administrative regulations in China do not prohibit the proction, holding and legal circulation of bitcoin, nor do they prohibit the sale of bitcoin mining machines2. The investment and transaction of "virtual currency" represented by bitcoin are on the rise. For this kind of virtual goods generated in the Internet environment after the development of Internet technology, there are policy and commercial risks in related transactions. However, under the premise of not violating the mandatory provisions of laws and administrative regulations, the contract signed by the parties is a valid contract
3. Bitcoin is generated by "miner" and "mining", and "miner" can be assumed by anyone in any place in the world. "Mining" is a process in which "miner" provides certain computer computing power according to the open source software provided by the designer, and obtains the special solution of the equation through complex mathematical operations, The miner who gets the special solution gets a certain amount of bitcoin reward
Because bitcoin is based on workload proof, it is related to computing power. To have computing power, we need to consume power, so its power consumption is very large. It is precisely because of such a large power consumption that the safe and stable operation of bitcoin system can be guaranteed 
extended information:
according to the data of btc.com website, up to now, the computing power of the whole bitcoin network is about 51.65 eh / s, which is equivalent to 1.84 million bitcoin S15 (28T computing power, 1596w power) mining machines in operation, and the daily power consumption is about 69.92 million kwh. Divided by the current proction of 1800 bitcoins per day, excluding other costs, each bitcoin will consume 38800 kwh of electricity. "
from this point of view, although the current price of bitcoin is expensive, the cryptocurrency market website coinmarketcap.com shows that the current unit price is about $7900, but the cost of mining a bitcoin is not low at all
The new blackmail virus is called Petya blackmail virus. According to foreign media reports, a variant of Petya extortion virus, which is homologous to wannacry extortion virus technology, broke out in the world on Tuesday. A number of large enterprises including the UK, Ukraine, Poland, Italy, Denmark, Russia and the United States reported that they were attacked by the virus. Among them, the government, state-owned banks, transportation, energy and other key infrastructure and departments in the hardest hit Ukraine were attacked, Even the prime minister's computer was attacked
similar to wannacry, unlocking Petya virus also requires payment of encrypted digital currency. It is reported that after the virus locks the computer, it requires users to pay $300 in encrypted digital currency to unlock it. According to the public data of the bitcoin trading market, there were 10 ransom payments in the first hour of the virus outbreak, and its "money sucking" speed completely surpassed that of wannacry. But the latest news shows that because the virus author's blackmail mailbox has been sealed, now the ransom can not restore the system
you are not well informed.