The latency of bitcoin blackmail virus

1. Wannacry (also known as wanna decryptor), a kind of "worm like" blackmail virus software, with a size of 3.3mb, is spread by criminals using the dangerous vulnerability "eternal blue" leaked by NSA (National Security Agency)
the malware will scan the TCP 445 port (server message block / SMB) on the computer, spread in a worm like way, attack the host and encrypt the files stored on the host, and then ask for ransom in the form of bitcoin. The amount of extortion ranged from $300 to $600
on May 14, 2017, a variant of wannacry blackmail virus appeared: wannacry 2.0, which cancelled the kill switch and spread faster. As of May 15, 2017, wannacry has caused cyber attacks in at least 150 countries, which has affected the financial, energy, medical and other instries, causing serious crisis management problems. Some windows operating system users in China are infected. Campus network users bear the brunt of the infection. A large number of laboratory data and graation projects are locked and encrypted.

2. In short, blackmail virus is a computer virus that uses Windows system vulnerability to maliciously encrypt user files and then extort money

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(3) in view of the current technical means, if blackmail virus can not be solved, it can only be completely formatted, Then, the system is reinstalled and the system vulnerability patch is made to prevent the secondary poisoning

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3.

Once the computer is infected with this bitcoin blackmail virus, all the file data on the computer will be forcibly encrypted. If it is not delivered in the form of bitcoin to the virus maker & lt; Ransom;, Then these files can't be decrypted and retrieved. Even if the ransom is paid this time, they may be decrypted next time; Patronize & quot& mdash;& mdash; That is to say, this virus is very important to & lt; Pay attention to data & quot; It's hard to estimate the harm that can be caused by the users, especially the enterprise users

How to avoid the harm of bitcoin blackmail virus< p> As soon as bitcoin blackmail virus came into being, it immediately caused an uproar around the world. Major network security organizations and well-known anti-virus software began to pay attention to this problem

there is a lot about & lt; Manually set the firewall to close the sensitive port of the computer, so as to resist the bitcoin blackmail virus; But this kind of method is more suitable for those who know computer better; Non white people;, For example, for a third rate programmer like me, this method is more suitable for me. I can't even use antivirus software

but for the general public, it may be necessary to deal with it in a simpler way

it has been several years since the advent of bitcoin extortion virus. In order to help users' computers fight against bitcoin extortion virus attacks, many anti-virus software have certain defense mechanisms. For example, 360 launched a & lt; Anti blackmail service;, If your data is encrypted by bitcoin extortion virus when 360 is installed on your computer, 360 will compensate for your ransom and recover your data

users who don't know how to use computers can choose to install anti-virus software to defend you against such viruses, but it depends on their hobbies to choose which one

4. What is blackmail virus< Different from other similar blackmail viruses, wannacry virus is a kind of worm that can infect other computers automatically and spread rapidly e to chain reaction
2. This kind of blackmail virus mainly infects windows system. It will use encryption technology to lock files, forbid users to access, and blackmail users
3. The attacker claimed that he could only unlock the file after asking for more than $300 worth of bitcoin. In fact, even if the ransom is paid, it may not be able to unlock the file
Why are they infected
once the blackmail worm attacks a user machine that can connect to the public network, it will scan the IP of the intranet and the public network. If the scanned IP has opened port 445, it will use the "enternal blue" vulnerability to install the back door. Once the backdoor is executed, a blackmailer virus named wana crypt0r will be released to encrypt all documents and files on the user's machine for blackmail
why use bitcoin
bitcoin is a kind of point-to-point network payment system and virtual pricing tool, commonly known as digital currency. Bitcoin is popular among cyber criminals because it is decentralized, unregulated and almost untraceable< Background of transmission and infection
this round of blackmailer worm virus mainly includes two family variants onion and wncry, which first broke out in Britain, Russia and other countries, and many enterprises and medical institutions were recruited in the system, resulting in heavy losses
global monitoring of security agencies has found that as many as 74 countries have suffered this blackmailer worm attack
since May 12, the spread of infection in China has also begun to increase sharply, and the outbreak has been intensified in many universities and enterprises
wannacry blackmail virus prevention method:
1. Install the latest security patch for the computer. Microsoft has released patch ms17-010 to fix the system vulnerability of "eternal blue" attack. Please install this security patch as soon as possible; For Windows XP, 2003 and other machines that Microsoft no longer provides security updates, we can use 360 "NSA Arsenal immunity tool" to detect whether there are vulnerabilities in the system, and close the ports affected by the vulnerabilities, so as to avoid being infringed by blackmail software and other viruses
2. Close ports 445, 135, 137, 138 and 139, and close network sharing
3. Strengthen the awareness of network security: don't click the unknown link, don't download the unknown file, don't open the unknown email...
4. Back up the important files in your computer to the mobile hard disk and U disk as soon as possible (regularly in the future), and save the disk offline after the backup
5. It is recommended that users who are still using Windows XP and windows 2003 should upgrade to Windows 7 / windows 10 or windows 2008 / 2012 / 2016 as soon as possible.

5. Wanacry: wannacry, a 3.3mb "worm like" blackmail software, is spread by criminals using the dangerous vulnerability "eternal blue" leaked by NSA (National Security Agency)
the malware will scan the TCP 445 port (server message block / SMB) on the computer, spread in a worm like way, attack the host and encrypt the files stored on the host, and then ask for ransom in the form of bitcoin. The amount of extortion ranged from $300 to $600
on May 14, 2017, a variant of wannacry blackmail virus appeared: wannacry 2.0, which cancelled the kill switch and spread faster. As of May 15, 2017, wannacry has caused cyber attacks in at least 150 countries, which has affected the financial, energy, medical and other instries, causing serious crisis management problems. Some windows operating system users in China are infected. Campus network users bear the brunt of the infection. A large number of laboratory data and graation projects are locked and encrypted
at present, the security instry has not been able to effectively break the malicious encryption behavior of the blackmail software. Brad Smith, President and chief legal officer of Microsoft, said that the U.S. national security agency did not disclose more security vulnerabilities, which gave criminal organizations an opportunity to take advantage of, and eventually brought the blackmail virus that attacked 150 countries this time
data reference: Network

6.

Because of the lack of inscriptions and diamonds, the hero who wants to buy can't buy it. The match is naturally lower than the opponent. Inscriptions are very important in the game. A set of good inscriptions at full level can give your hero a qualitative leap< diamonds are also a common currency in the game. They can be used to buy heroes, lucky draw, and inscriptions. Generally, they are used as much as you can save. Next, I'll introce some places where you can get inscriptions and diamonds hidden in the glory of kings

1. Hero proficiency inscription reward

many cute new players don't know, open the community in the game & mdash& mdash; My & mdash& mdash; Game data & mdash& mdash; Hero pool: you can find that there are two boxes under each hero. One is when the hero's proficiency reaches green, and the other is when the hero's proficiency reaches blue. You can get 50 and 200 inscriptions respectively. You can get each one three times a day. If you have never received it before, you should be able to collect a lot of fragments, and you can save all the fragments needed to buy a fifth level inscription in two days{ RRRRR}

7. The probability of eth is 10%
the calculation of the whole server
ultimately depends on luck
monsters that can make a death knell can make an invisible death knell

8. First of all, what is gene? Gene (genetic factor) is the main material of genetic variation. Gene is the basic genetic unit controlling biological characters. Genes exist on the chromosome, and they are arranged linearly on the chromosome, so it is concluded that the chromosome is a gene carrier. The DNA fragment that can express genetic information is called gene. The existence of gene not only exists in DNA, but also in RNA

genes are mainly used to express genetic properties, record and transmit genetic information. It dominates the basic structure and performance of life. It stores all the information about the process of life breeding, growth and apoptosis, and completes the important physiological processes such as life reproction, cell division and protein synthesis through replication, transcription and expression. All life phenomena such as life, growth, disease, aging and death are related to genes. It is also the internal factor that determines life and health. Therefore, gene has al attributes: materiality and informativeness.