Hacker mining technology video

3. Using a closed system or an unpopular system is the simplest and most crude method, which is to some extent fruit powder welfare
to prevent hackers from mining with your machine is just like anti malware. Don't visit messy websites, Download messy software, insert picked up USB flash drives, install anti-virus software (Windows Defender on windows is very good, but it's too strict), check and kill viruses regularly, and check abnormal processes and files regularly. If a program attracts UAC, If you don't understand, try to choose no, and don't believe that "it may be misled by anti-virus software". If possible, you'd better install an isolation machine, shadow system, or create a virtual machine directly with Hyper-V of windows system for daily work
for Android phones, phones before Android 6 are unlikely to win. After all, mobile phone mining also needs good hardware. After Android 6, mobile phones have the management of the authority of each application, as long as they don't go blind root, don't install applications of unknown origin, try to download apps from the official market and rece the unnecessary authority as much as possible (you can also use "refrigerator" and "black domain" to prohibit other apps from running in the background)
for the mobile phones of apple, windows and other operating systems, I think that as long as we don't break the prison blindly and keep the system in the latest version, we can prevent the hooliganism of most apps.

4.

BCC mining and bitcoin mining are the same, the only difference is the dynamic mining strategy

when BCC was just born, it continued the mining difficulty of BTC. The miners lost money for mining out of belief. At the beginning of bitcoin's birth, they even proced a block within 12 hours. In order to ensure the stable development of BCC network, BCC adopted the strategy of dynamic adjustment of mining difficulty, which can ensure that the block speed of BCC can well adapt to the decline of computing power

BTC is a difficulty adjustment for every 2016 blocks, while BCC adds a rule of "if the MTP interval of the past six blocks is greater than 12 hours, the next difficulty will be reced by 20%". At present, the mining difficulty of BCC has been reced a lot, which is about 13% of that of BTC. BCC's current block speed is close to an average of 10 minutes out of a block

< H2 > extended data:

mining principle of BCC:

the previous life of BCC was bitcoin. Before the bifurcation, the data stored in the blockchain and the running software were compatible with all bitcoin nodes. After the moment of bifurcation, it began to execute new code and package large blocks, thus forming a hard bifurcation on the chain. At present, BCC is still a futures, which will be officially split into a new currency on August 1

security problems faced by bitcoin:

the first security threat of users comes from the user activated hard fork or uahf - all BTC holders who control their private key get an equal number of BCCs at the time of fork

that's the problem: there are many domestic trading platforms designed for bitcoin, but it should be noted that many investors use third-party transactions or unsupported software wallets, but the investors themselves do not control their private keys, so it is the third-party trading platform that finally receives the new currency. Some platforms will inform customers, while others will not

many investors have transferred their assets to the supported bitcoin wallet a few hours before the hard fork, while investors without independent wallets have to wait

there are many opportunities for phishing attacks or other malicious attacks, especially considering that most successful malicious attacks against bitcoin are focused on controlling private key or hacker exchange, rather than directly attacking currency. About the security of bitcoin, you can also add your own wechat seciot to communicate

BCC is very similar to BTC in technology, adding greater blocking and transaction replay protection, and the latter is in a new form of signature. Bitcoin cash transactions use a new sight_ Fork ID, which prevents bitcoin cash transactions from being replayed on bitcoin blocks

the new hash signature also brings additional benefits, such as the input value signature improves the security of hardware wallet and eliminates the second hash problem. In short, it is theoretically safer than BTC, and its purpose is to start and use faster and more convenient

However, BCC does face a major threat, that is, most attacks, that is, the security risk of a single entity acquiring more than 51% of the network processing power. At the same time, the common enemy shared by the two blockchains is interrupt attack. Most attackers use network interrupt to split the network to improve the probability of success

at the same time, partition network and network delay attack are threats. According to the latest research paper, for the so-called distributed network, it is easier than assumed, and 20% of bitcoin nodes are hosted in less than 100 IP prefixes

5.

In fact, it's not difficult. When we use mobile phones everyday, there will be some background applications, which will be "killed" after restart. However, if the mobile phone is hacked and rebooted, it will enter a high load state again, and the system running memory will be used up quickly. Therefore, if the mobile phone is stuck, hot or dead for no reason, it may be g

it is possible that hackers steal all the information before using mobile phones to "mine" cryptocurrency. People will not only encounter problems such as cell phone stuck, fever and even crash, but also other financial losses

moreover, it is worth noting that some mobile mining apps, in the name of "mining", allow users to invest money and continue to develop offline

6.

Before we learned a simple price situation of enamel steel plate, this time, Xiaobian will take you to have a more in-depth understanding of the proction process of enamel steel plate. We mentioned that enamel steel plate is a kind of composite material, so the proction process is relatively more complex, but its material performance is good, and its appearance is also good-looking, which can be used in many different places. Then come to understand the proction process of this enamel steel plate

I. conditions of enamel steel plate

1. The carbon content is 0.08 ~ 0.12%

2. The surface structure is uniform

3. It is suitable for stretch forming, not easy to crack and wrinkle

4. It is suitable for welding, easy to clean

5. It is not easy to deform and bend ring firing. At present, the commonly used plates and models in China are Baosteel btc1, Maanshan spcc-1dc01, etc

Second, the glaze should have a wide range of firing temperature and resistance to firing, and the coefficient of thermal expansion is appropriate, After firing, it is not easy to proce cracks and deformation

5. It has certain explosion-proof performance

the grinding additive and function of glaze formula

1, clay 2, quartz 3, electrolyte (nitrous borax)

the function of clay:

1 as the suspending agent of glaze, plays a suspending role

2, Clay can affect the physical structure and expansion coefficient of enamel ring sintering. Clay can change the covering power, whiteness and luster of enamel. Electrolyte: nitrite: antirust effect. Generally, 0.2-0.5% borax is used as melting aid. The standard thickness of steel plate enamel is 80-120um, The primary glaze is 120 ~ 150um

surface glaze: the surface glaze is divided into base glaze and titanium glaze

the base glaze is mainly used for color matching, the base glaze needs to have good luster and porcelain surface, glue resistance, and it is not easy to proce glue film after Decal

the white glaze needs to have good hiding power and luster, Acid resistance

the thickness of surface glaze is generally 150 ~ 200um

test index and method of glaze slurry:

1 particle size (coarse and fine) 2 specific gravity (solution weight) 3 retention (adhesion)

glaze slurry particle size test

take 50ml glaze slurry and wash it with 200 mesh screen water, After the resial porcelain powder is dried, the following results can be obtained:

standard particle size: down lead: 6-8g surface glaze: 3-5g colored glaze: 2-4G

specific gravity:

take 100ml glaze slurry into a Pycnometer (set bottle weight 50g), The total weight minus the bottle weight can be obtained as follows:

specific gravity requirements: pot cover: down lead 169-170g / 100ml surface glaze: 172-174g / 100ml colored glaze: 172-174g / 100ml

pot body: down lead 166-167g / 100ml surface glaze: 167-169g / 100ml colored glaze: 167-169g / 100ml

adhesion test:

take the plate thickness of 1mm, length and width of 100cm × 10cm stainless steel sheet (set weight as 50g) is placed in the glaze slurry after mixing, and the glaze slurry does not continue to drop until it is lifted vertically (not fast or slow). After weighing and recing the weight of stainless steel sheet, the adhesion amount is

pot cover: downward: 12g / 10 × 10cm white glaze: 14g / 10 × 10cm color glaze: 14g / 10 × 10cm

pot body downward: 7g / 10 × 10cm white glaze: 9g / 10 × 10cm color glaze: 9g / 10 × 10cm

aging of glaze slurry:

the glaze slurry needs to be aged for 36-48 hours before use, which is very important. It can improve the working properties and operating performance of glaze slurry, but if the aging time is prolonged, it will be harmful to the properties of glaze slurry, The surface glaze is generally added (potassium carbonate + magnesium sulfate). Before use, take a small amount of glaze slurry and adjust the thickness. Add the thickness adjusted glaze slurry into the glaze slurry to be adjusted, so as to avoid small bubbles and affect the performance of glaze slurry

In order to improve the unevenness of enameling powder, it is better to adopt natural dripping operation, so as to achieve uniform thickness, rationalization of action, standardization of operation, and save physical strength, so as to rece the defect rate, improve proct quality, rece the amount of glaze slurry, and save cost, Generally follow the principle that the proportion of large procts is slightly lower, the proportion of small procts is slightly higher, and the cover is slightly higher than the pot body

2 gesture should be consistent as far as possible, the bottom should be swung 4-5 times, and the two sides should be swung about 2 times, and the force should be subject to the swing of the penlum.

3 when soaking the pot body, it should be 360 degrees to the edge of the pot, not to the bottom, so as to avoid the horizontal bar or too thick bottom, The manufacturing process of enamel steel plate is relatively complex, so we pay attention to the accuracy of hand gestures in the process of firing and enamelling. The accuracy of hand gestures can save the beauty of the finished proct and the amount of raw materials. In addition, in the manufacturing process of enamel steel plate will encounter some more difficult to solve problems, these problems depend on everyone's experience in the actual operation to improve his practice