Miner attack

1.

Mine pool refers to:

as the computing level of the whole bitcoin network continues to rise exponentially, a single device or a small amount of computing power can not get the block reward provided by the bitcoin network on the bitcoin network

after the computing power of the whole network has been improved to a certain extent, the low probability of getting rewards has prompted some geeks on "bitcoin talk" to develop a method that can combine a small amount of computing power and operate jointly, and the website established in this way is called "mine pool"

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the existence of the mine pool reces the difficulty of bitcoin and other virtual digital currency mining, reces the mining threshold, and truly realizes the bitcoin mining concept that everyone can participate in

but its disadvantages are also very obvious, because computing power is connected to the mine pool. As a mine pool, it will have huge computing power resources. In the bitcoin world, computing power represents the bookkeeping right, and computing power is everything. If the computing power of a single mine pool reaches more than 50%, it will be easy to launch 51% attacks against virtual digital currencies such as bitcoin, The consequences are very terrible:

the mine pool can make the mine pool with 49% of the remaining computing power have no harvest, instantly quit the competition and go bankrupt. The mine pool's computing power exceeds 50%. If 51% attack is launched, it will easily occupy all the effective computing power of the whole network

2.

1. Back up important data and photos and restore factory settings. Don't install applications from unknown sources. In addition, don't authorize in permission settings

2. You can swipe the computer to see if it can't work. Besides, the computer needs to clean up the memory on time so that it won't get stuck. The memory of the mobile phone is seriously insufficient. It is recommended to clean up the memory lightly, and then restart your mobile phone again

3. Clear the data of the mobile phone. If there are important things, save them on the network disk first, and then restore the factory settings three times. This is safer

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1. Set the security level of the browser. Our common browsers all have the function of security level setting. Through reasonable setting, we can effectively filter the access restrictions of some illegal websites, so as to rece the damage to computers and personal information

2. Firmly resist reactionary, pornographic and violent websites. On the one hand, these bad information will affect the physical and mental health of teenagers, on the other hand, many illegal websites will use browser vulnerabilities to attack users

3. Don't click illegal links at will

When downloading software and materials, we should choose the regular website or official website

5. Turn off some sensitive functions in common communication software. Such as "people nearby" in wechat and "allowing strangers to view photos" in wechat privacy

6. Do not take photos of your family and address. If it goes on like this for a long time, as long as it is analyzed and summarized by others, the information exposed will become a complete set of information, which hides all kinds of unpredictable risks

Do not test related information on the Internet. Some websites do surveys and ask for information about age, hobbies, gender, etc. to do it for a small profit. This information may be used by others, and graally summarized, and sold to others for profit or threat

3.

At the end of March this year, bitmainland launched an ant miner X3 based on ASIC, which is mainly aimed at Monroe coin (XmR) and cryptonight algorithm dependent cryptocurrency. Monroe coin immediately issued a counter statement that it will change the core algorithm to fight against the invasion of ASIC computing power

what would be the result if it appeared in the world of digital cryptocurrency? That is, the wrong calculation results may be brought into the whole network without being discovered

More importantly, if a "calculator manufacturer" monopolizes the calculator market, it can also deliberately proce this kind of calculator with errors to change the mathematical rules

after all, the "calculation" in the field of crypto digital currency is not as simple as 1 + 2 + 3. You can't compare paper currency with special currency by hand

the practical significance of computing power monopoly in mainland China

we have learned about attacks based on 51% computing power in various articles

but the reality is that although the global power of 78% was in Chinese mainland, fortunately, they were scattered in different pools and controlled by different people. p>

although all POW based cryptocurrencies have the risk of being attacked by 51%, few people can really launch attacks e to the dispersion of computing power

but what if the miners themselves don't want to attack, but the mining machinery manufacturers attack

still using the analogy just now, although each miner subjectively wants to do the problem checking independently, their calculator is manipulated remotely and gives consistent wrong answers. This may pose a great threat to digital cryptocurrency

however, the manufacturer with the absolute voice of mining machinery had such a problem in mainland China

in April 2017, the back door of antbled came out. Although this is described as a "vulnerability" in Chinese, antbled is more like a function that has been implemented and designed

anonymous people found that after an ant miner made by bitmainland was connected to the network, it would communicate with a domain name held by bitmainland on a regular basis and return the miner's serial number, MAC address and IP address to bitmainland's server. If the server of bitcontinent gives a negative signal, the miner will stop running

although bitcontinental responded that they could not shut down any mining machines that did not belong to them. However, the bitcoin core team has proved in experiments that this function has no verification. Anyone can shut down mining machines by forging DNS - but it also means that bitcoin mainland has the ability to shut down any sold mining machines

After

, bitcontinent fixed this "loophole", but it caused heated discussion in the community. This has also set the tone that almost all pow blockchain communities are biased against mainland China

a few months later, under the leadership of bitcontinent, viabtc g out the first block and made a hard bifurcation with the blockchain of bitcoin. From then on, bitcoin BCH (bitcoin cash) appeared in the world

will the monopoly of mining machinery destroy the distributed system

facing this problem, we should have a clear answer now. That is, the monopoly of mining machinery will certainly affect the safe operation of pow digital cryptocurrency

the problem is not whether bitcontinental and its founder Wu Jihan are trustworthy, but that one of the values of any blockchain system is to operate safely without trust in any single company or indivial

even if the ASIC miner is not monopolized by bitmainland, the ASIC miner itself will increase the concentration of computing power

the ASIC used for mining has great requirements for ventilation, power and site, and has no use except for mining. At the same time, the calculation difficulty of the whole network is increased e to the powerful computing power

as a result, it is very difficult for external players to start mining in the next software on the computer as they did five years ago. And the recent centralized exchange is caused by frequent black incidents, which also proves that concentration in this unregulated market will definitely lead to insecurity

assuming that the bitcoin network runs on top of one million miners, no one can shut it down. And if the bitcoin network runs on 20 large mines, it's much easier to shut it down

and by the end of 2017, 78% of the effort was concentrated in mainland China, which led to a real possibility of Chinese mainland regulators' launching a deadly attack against the special currency. p>

moreover, most of the scenarios of using digital cryptocurrency are related to "decentralization". Once centralized, it means that these scenarios no longer exist. It turns a project that might have value into a pure waste of computing power

Then, what measures should we take in the face of this situation

first of all, as the project side, it may be time to give up the pure POW mechanism. In fact, in many projects of issuing cryptocurrency, especially in asset securitization projects. Similar to the concept of stock in the real world, POS itself is more reasonable than pow

in the media that don't know about blockchain, we often hear such words as "bitcoin wastes a lot of computing power and has no value", which is reasonable to some extent. It is difficult for a POW based blockchain to bind the value of the project itself to the issued digital cryptocurrency - because the real value behind the price of the currency does not come from the project, but from the cost of maintaining computing power

and the hybrid mode of pow + POS is more like the future. In the hybrid mode, both coin holders and miners can participate in the major decisions of this community. If a decision is widely accepted, the blockchain will be soft forked to the latest state without excessive intervention of developers, and there will be almost no private resistance of miners or mining machines

secondly, as a retail miner, if you are still digging a pure POW mechanism currency, you should unconditionally support the bifurcation activities initiated by the community to resist the ASIC mining machine, even if it will lead to the failure of your mining machine

this may sound contradictory, but in the long run, it is better to promote the reform of the community and get more benefits in a currency controlled by the monopoly of computing power. Because in many conflicts between computing power and community in the past, the ultimate result is that the computing power owner will forcibly keep the old algorithm to hard fork the blockchain

just like Eth and etc, the classic Ethereum (etc), which belongs to the computing power master, has lost the support of developers and become an air coin with no vitality and impossible to develop applications

as a retail leek, you should be careful to trade the non mainstream digital currencies (except bitcoin) supported by bitmainland mining machinery, so as to avoid falling into a blockchain in which bitmainland controls the computing power completely

finally, if you are bitcontinent, what should you do

bitcontinent's goal is to become Intel, AMD and NVIDIA, make greater contributions to the whole computer instry, and become a great company, not just entangled in the immediate interests of mining

Wall Street financiers have long seen through the violence brought about by NVIDIA's video card mining. The rise and fall of the company's stock price has been consistent with the price of bitcoin, and even affected by the digital currency market. Citron, a well-known short seller, has recently been bearish on NVIDIA, arguing that the company has focused too much on providing services for digital currency miners rather than on serious businesses such as artificial intelligence, games and driverless driving

the mission of chip manufacturers is to provide more powerful chips to drive more intelligent services, and finally contribute to the real world, rather than become monopoly tycoons in the virtual world. When we no longer enter the gate of the virtual world, the only thing left is a deserted land

in an interview with US media last year, Wu Jihan disclosed that he would make an IPO with a market value of billions of dollars. As a company about to go public, bitmainland should not only be responsible to investors, but also accept investors' questions about the sustainability of its business. "If your mining machinery goes public, it will encounter a fork, what should you do?"

and this question, which needs to be asked after the listing, has already appeared: the current price of the split coin xmo after the Monroe team split is $7.50, while the current price of the real Monroe coin XmR is $194, and the split coin is completely abandoned by the Monroe community

before bitcontinent becomes the name of all blockchain communities, we can rely on the huge amount of capital accumulated in recent years to transform into an artificial intelligence chip company along the previous plan, rather than continue to develop a variety of digital currency mining machines to extract the last drop of oil before the ecological collapse

content source: phoenix.com

4. It's normal to check and kill the system virus because it will occupy a lot of memory and affect the speed of the system. However, the main reason is that you open too many processes
normally, when a computer with high configuration is used for virus detection and garbage cleaning, it will have a partial impact on the system speed, but the impact will not be great. In particular, Tencent computer housekeeper, the anti-virus software is equipped with three powerful anti-virus engines, in the virus killing, scanning speed is very fast
in your case, it is recommended to optimize and clean up the system first, close the rendant processes, and then check and kill the whole system.

5. Green venture currency (GEC) is a kind of digital currency in the form of P2P. You can also understand it as virtual currency. Different from those who register to send money or subscribe to buy money in the past, this miner digs money free of charge after registration and then sells it. Now many platforms are imitating him, and the price has been rising. At present, you can get on the bus with the miner. You can earn at least 600 yuan a month. GEC is a kind of P2P digital currency, and you can also understand it as virtual currency. Different from those who register to send money or subscribe to buy money in the past, this miner digs money free of charge after registration and then sells it. Now many platforms are imitating him, and the price has been rising. At present, you can get on the bus with the miner. You can earn at least 600 yuan a month. GEC is a kind of P2P digital currency, and you can also understand it as virtual currency. Different from those who register to send money or subscribe to buy money in the past, this miner digs money free of charge after registration and then sells it. Now many platforms are imitating him, and the price has been rising. At present, you can get on the bus with the miner. You can earn at least 600 yuan a month. GEC is a kind of P2P digital currency, and you can also understand it as virtual currency. Different from those who register to send money or subscribe to buy money in the past, this miner digs money free of charge after registration and then sells it. Now many platforms are imitating him, and the price has been rising. At present, you can get on the bus with the miner. You can earn at least 600 yuan a month. GEC is a kind of P2P digital currency, and you can also understand it as virtual currency. Different from those who register to send money or subscribe to buy money in the past, this miner digs money free of charge after registration and then sells it. Now many platforms are imitating him, and the price has been rising. At present, you can get on the bus with the miner. You can earn at least 600 yuan a month. GEC is a kind of P2P digital currency, and you can also understand it as virtual currency. Different from those who register to send money or subscribe to buy money in the past, this miner digs money free of charge after registration and then sells it. Now many platforms are imitating him, and the price has been rising. At present, with the miner, you can get on the car quickly and earn at least 600 yuan a month

6.

Sharing on TVB:

what is blockchain mining
there are two kinds of mining in the new era, the first is bitcoin mining. After each transaction occurs, it is not complete. The transaction data must be written into the database before it is established, and the other party can really receive the money. First of all, all the transaction data will be sent to the miners, who are responsible for writing these transactions into the blockchain to complete the mining and obtain profits
the second is to dig Shanzhai. Zero coin, Monroe coin, ether coin, Wright coin, bitstock and other "Shanzhai coins". After a miner is assembled, it is connected to the designated mine pool. According to the specific algorithm, it starts full load operation and completes a calculation cycle to obtain "one" virtual currency. Then put the "this" currency on the online trading platform to cash out

How can blockchain mine
at the beginning, bitcoin could be g up with the computer CPU. The founder of bitcoin, Nakamoto Tsung, g up the world's first creation block with his computer CPU. However, the era of CPU mining has long passed, and now bitcoin mining is the era of ASIC mining and large-scale cluster mining
if you want to be a miner, it's actually relatively simple. You can start mining by purchasing a special mining equipment. You don't need to do it yourself. In fact, the computer is performing specific calculations. For miners, you only need to ensure the power supply and network connection of the mining machine

7. The fastest way is to take Metro Line 3 (Xiaodian direction) from south station, get off at Tianta station (exit b), go to Tianta station, take No. 8, and get off at the sports center bus station.

8.

Bitcoin mining machine is a kind of computer used to earn bitcoin. This kind of computer generally has professional mining chips and works in the way of burning graphics card, which consumes a lot of power. It is one of the ways to get bitcoin that users download software from personal computer and then run specific algorithm to get corresponding bitcoin after communicating with remote server

mining is actually a competition of performance and equipment, and a competition of computing power among miners. Miners with more computing power are more likely to dig bitcoin. With the increase of computing power in the whole network, it is more and more difficult to dig bits with traditional devices (CPU, GPU). People have developed chips specially used for mining. Chip is the core part of mining machine. The process of chip operation will proce a lot of heat, in order to cool down, bitcoin miner is generally equipped with heat sink and fan

bitcoin is a kind of virtual currency. Bitcoin mining system is the process of carrying out mathematical operation for bitcoin network through computer hardware, and the miners who provide services can get a reward, because the network reward is calculated according to the tasks completed by the miners, so the competition for mining is very fierce

bitcoin mining started with low-cost hardware such as CPU or GPU, but with the popularity of bitcoin, the mining process has changed greatly. Nowadays, the mining activities are transferred to the field programmable gate array, and the hash speed can be achieved through optimization. The mining efficiency of this mode is very high

9. Let's say that the value of bitcoin is basically equal to the cost of mining, and the server cost is the rent of renting the server for one year. The bitcoin exchange rate is about $1000 a bitcoin. At present, 25 bitcoins are generated in 10 minutes, that is, about $25000 per 10 minutes, 150000 per hour, 3.6 million per day, and about $1.28 billion per year. If you want to maintain 51% of the computing power for one year, that is, you need to increase the computing power equivalent to $1.3 billion of server rent. If we want to maintain the short-term computing power, the price will not necessarily decrease a lot, because the price of short-term renting servers will be much higher. And the current mining machinery is basically ordered directly like the manufacturer, the actual cost is much lower than renting the server. Therefore, the cost of launching a 51% attack on bitcoin is not low
please accept if you are satisfied

10. Are you talking about whitenodea1? This miner is good. Unlike bitcoin, it's based on the pos3.0 mechanism
the quantity you can dig every day is your total xwc / xwc mining amount * 2880. The more xwc, the more digging
as for security, the software and hardware of white coin miner are all open source, and Linux open source system is adopted. Linux system is the most famous operating system with innate virus immunity in the world, which is rarely attacked by viruses. Even if it doesn't shut down all year round, the system can run stably, which is suitable for mining machine.