Is foreign digital currency exchange safe

1. Generally, the ranking is not reliable for two reasons:

1. Trading volume. Bitwise and Bti reports show that most of the trading volume of the head exchanges is water injection or "washing volume". Domestic exchanges are more serious, and even some exchanges have washing volume as high as 90%. Specifically, I don't guide public opinion and have no interests. You can search by yourself according to the above keywords. There are a lot of news< 2. Advertising strategy of ranking platform. At first glance, you may feel fair and beautiful, but where you don't easily pay attention, the operation of these platforms is very sneaky. For example, if you look at the second page of some ranking platforms (because you only pay attention to the first page, and the second page will not turn), all kinds of ghosts and ghosts are on it, and the weak trading volume is also on it. It's a shop bully. So we still have to clean our eyes

how to choose? Move back the priority of trading volume in your mind, and see what negative comments the exchange has, what controversial currencies are on it, and what functions you want to try. Just sort them out by yourself.

2.

The contract transaction of digital currency is not safe. There are still many loopholes in the digital currency trading platform, for example, the most common are the following six kinds:

1. Denial of service attack

denial of service attack is the most important attack against the digital currency trading platform at present. Through denial of service attack, the attacker makes the trading platform unable to access normally, Because users can not accurately distinguish the degree of attack, it often causes panic asset transfer, which brings some loss

2. Phishing incident

even the best technical measures at present can not make the digital currency trading platform avoid phishing attacks. Some hackers and criminals can confuse digital currency investors by means of fake domain names or fake pages, while ordinary investors can't identify the authenticity, so it's easy to cause asset losses

Many digital currency trading platforms use a single private key to protect the hot wallet. If hackers can access a single private key, they can crack the hot wallet related to the private key. For example, in the attack on yapizon of Seoul stock exchange in 2017, the attackers stole hot wallets from the trading platform twice in a year, resulting in a total loss of nearly 50% of the assets of the trading platform and eventually leading to the bankruptcy of the trading platform

Fourth, e to the lack of perfect risk isolation measures, or ineffective supervision on the rights of employees, some employees who have the operation rights of the platform use internal trust to seek unjust wealth for themselves. For example, in 2016, the event of employees stealing bitcoin on shapeshift caused a total loss of US $230000 to the trading platform by stealing and reselling sensitive information to others

Fifth, the software vulnerability of digital currency trading platform includes single sign on vulnerability, OAuth protocol vulnerability and so on. At present, all countries have laws requiring banks or other financial institutions to implement information security measures to protect customers' deposits. However, e to the fact that the blockchain field is still in its infancy, there is a lack of such specifications for encrypting digital assets. Therefore, it is not accidental that many trading platforms have a large number of loopholes in the absence of security constraints

6. Transaction malleability the technical supporters of blockchain often think that blockchain transactions are highly secure because they are recorded on records that are said to be unchangeable, but each transaction needs to have a corresponding signature, and the records can be forged temporarily before the final confirmation of the transaction

extended data:

rules of contract transaction

1. Transaction time

contract transaction is 7 * 24 hours transaction, which will be interrupted only ring the settlement or delivery period of 16:00 (UTC + 8) every Friday. In the last 10 minutes before delivery, the contract can only be closed, not opened

Transaction types are divided into two types, opening and closing. Opening and closing positions are divided into two directions: buying and selling:

buying open long (bullish) refers to buying a certain number of contracts when users are bullish and bullish on the index. Carry out "buy open more" operation, match success will increase long position

selling pingo (multi order closing) refers to the selling contract that the user makes up for when he is no longer bullish on the future index, offsets with the current buying contract and exits the market. Carry on "sell flat much" operation, match after success, will rece long position

short selling (bearish) refers to the new sale of a certain number of certain contracts when the user is short or bearish on the index. Carry out the operation of "sell short" and increase the short position after successful matching

buy close (short single close) refers to the buy contract that the user will not be bearish on the future index market and make up for, offset with the current sell contract and exit the market. Carry out "buy short" operation, after matching successfully, short position will be reced

3. Order method

limit order: the user needs to specify the price and quantity of the order. Limit order can be used for opening and closing positions

order at opposite price: if you choose to order at opposite price, you can only enter the order quantity, not the order price. The system will read the latest competitor price at the moment of receiving the entrustment (if the user buys, the competitor price is the selling price of 1); If it is a sell, then the counter price is buy 1 price). Issue a price limit order for this counter price

4. Position

the user owns the position after opening and trading, and the positions in the same direction of the same contract will be merged. In a contract account, there can only be 6 positions at most, that is, multiple positions of current week contract, short positions of current week contract, multiple positions of next week contract, short positions of next week contract, multiple positions of quarterly contract and short positions of quarterly contract

5. Order restriction

the platform will restrict the number of single user's positions in a certain period of contract and the number of single open / close positions, so as to prevent users from manipulating the market

when the number of positions or entrustments of users is too large, the platform has the right to require users to take risk control measures, including but not limited to cancellation of orders, closing positions, etc. The platform has the right to adopt measures including but not limited to limiting the total number of positions, limiting the total number of consignments, limiting the opening of positions, withdrawing orders, forcibly closing positions, etc. for risk control

3. Most of the time, we choose digital currency platform from the perspective of revenue. After all, the original intention of investment is also to make money, which is not wrong in itself. However, when choosing platforms, we can not blindly put the income in the first place. If you choose a reliable digital currency platform, you can learn about the domain kingdom. Its popularity and influence in the world is good.

4. It depends on what kind of exchange it is. There is no problem with the big ones, such as the coin net in the fire coin net. It is suggested to be careful with some small platforms. If satisfied, please accept

5. It's the same as P2P. It depends on the platform. Of course, the big platform is safe. It's the small platform that has an accident. The leading ones in the global trading volume of digital currency exchange are all right, like fire money.

6. Listen to the mainstream voice, keep a clear mind
pay attention to the case, pay attention to the media news, and participate in the court hearing according to law
the results of attention belong to the scope of judicial information disclosure, which can be known by applying on the official website of the people's court

7. Okex is a good platform with high security and the largest trading volume in the world. It supports multi currency leverage trading, legal currency trading and contract trading.

8. It's a fraud platform. I've reported it on the official website of the Ministry of public security! Everyone who has been cheated should report to the police!

9. First of all, you have to make sure that you are operating on the international mainstream digital platform to ensure the security of the transaction