Topic of digital currency development (blockchain will not be attacked)

Blockchain Enthusiast (qq:53016353)
"There is a virus in the digital currency block chain. ”


When the news spread on the internet, digital money was pushed to the limelight. While this actually only affects a small number of digital money enthusiasts who have downloaded all the blockchain data, for bit-black, it will undoubtedly allow them to find a new point of injection.


In fact, as the popularity of digital currencies soared, it became a crown of cryptographic security and a target for many hackers to attack. Therefore, with the growth of digital money, related security incidents are also emerging. Someone to download the embedded Trojan client and lose money (so you must download and check the signature on the official website), also someone because the computer infected with the virus was used to mine without knowledge. Even if anti-virus software is installed, it will probably be accidentally killed and the wallet lost.


This time the situation is somewhat different because the virus data really exists in the blockchain of the digital currency.






Virus Events Original


On the May 16, someone wrote the signature of the virus dos/stoned into the digital currency block chain. Because this is just the signature of the virus, not the code of the virus, it does not actually pose any danger to the user. However, for Windows to add an EXE suffix as a system to execute the file, it is very important to prevent the awareness of hardship. So when the Microsoft Antivirus Suite (MSE) found the signature of the virus, a tragedy began: The MSE began to report a continuous alarm until the user quarantined the blockchain file, and the digital currency client will download it again ...


What's even more funny is that when a user responds to Microsoft, the response is "Please submit a sample of the suspicious file first." You know, the size of the commit file must be less than 10MB, and the size of the blockchain is more than 15G.


The solution to this problem is to temporarily add the blockchain file to the list of exemptions for the MSE, but this can also create new problems, such as the possibility that some malware may store itself in a blockchain file to avoid antivirus checking.


Virus attack against Blockchain


In fact, the theory of injecting a virus signature into a blockchain for cyber-attacks has long appeared. Theoretically, it causes the computer to be mistaken for anti-virus software, so that most of the online nodes are removed, thereby reducing the size of the digital currency network, increase the likelihood of 51% attacks. (Say off-topic, about this, play PWN this game everyone may have more intuitive feeling)


However, in the digital currency mining has become a high threshold of technology living today, the real impact of this attempt will only affect some less familiar with the computer use of non-technical users, and difficult to cause large-scale impact. But for those with a populist slogan that supports Windows running CPU mining, this may be the risk that they have to guard against.


Blockchain life in the state


The emergence of blockchain is one of the greatest innovations in Nakamoto, which presents a unified solution for maintaining data in a single point-to-point distributed network, while opening the door to smart asset applications that do not require trusted third-party operations. When Satoshi wrote "The Times 03/jan/2009 Chancellor on brink of second bailout for banks" in the creation block, it also opened a new era.


Once the data has been written to the blockchain, it can almost be assumed that the data will not be modified or destroyed. Therefore, this has spawned a parasitic currency such as contract currency, by adding a logo in the blockchain data to establish a contract or a notarized vote, but also because "bit permanent, the block forever spread" characteristics, some ingenuity to use the blockchain to witness their faithful love. (Life is short, bosom friend difficult to find, in today's 520 this holiday, please allow me a little bit sensational a ^^)


In fact, because of the openness of digital money, the data in the blockchain is much richer than most people think. A portrait of former South African president Nelson Mandela was encoded and written into the blockchain, while others wrote a prayer for miners in the blockchain, as well as a biometric simulator code written in Basic. Want to know more can point here.


This freedom has also led to some abuses, and the digital Money development team has made tough decisions to reduce the size of the chunk's writable content, which has been hotly debated in the parasitic-coin community, which relies on the size of the chunk chain. For this virus event, there are also POS enthusiasts pointing out that in some of the two tokens there is a mechanism to punish writing inappropriate data. The actual effects of such restrictions are not yet known, but, as there is light, there is darkness, and this may continue for a long time to come.