What algorithm for bitcoin virus

1.

Yesterday, I went to the electronic reading room. Not long after I plugged in the USB flash drive, the teacher suddenly asked everyone to unplug the USB flash drive. Some students found that all the files in the USB flash drive could not be opened, and there were two more documents asking for money

so everyone rushed to check, as long as the U disk inserted in the school computer were poisoned, large-scale computer poisoning occurred in the evening

a lot of people's information and graation thesis are in the computer. I really feel that hacker's behavior is disgusting. For the sake of money, regardless of the future of students, teachers' lifelong scientific research achievements...

hope to catch criminals as soon as possible and give them severe punishment by law

this virus will scan windows devices with open 445 file sharing port. As long as the user's device is on the Internet, hackers can implant blackmail software, remote control Trojan horse, virtual currency mining machine and other malicious programs in computers and servers

some security researchers point out that this large-scale network attack seems to be deployed through a worm application, and wannacry can spread among computers. What's more terrible is that unlike most malicious programs, this program can replicate and spread on its own in the network, and most of the current viruses still need to rely on the successful users to spread by cheating them to click the attachment with the attack code

the attack has affected 99 countries and as many as 75000 computers, but because the virus uses anonymous network and bitcoin anonymous transaction to obtain ransom, it is very difficult to track and locate the originator of the virus

2. In the case of blackmail software infection, disk files will be encrypted by virus, which is difficult to crack by using high-strength encryption algorithm. Besides paying high ransom, the attackers often have no other way to decrypt the files. Only paying high ransom can they decrypt and recover the files, causing serious losses to learning materials and personal data
1. Install the latest security patch for your 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 immune tool" to detect whether there are loopholes in the system, and close the ports affected by the loopholes, 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 or windows 2003 should upgrade to Windows 7 / windows 10 or windows 2008 / 2012 / 2016 as soon as possible.

3. According to the network security agency, this is a virus attack launched by lawless elements using the "eternal blue" leaked from NSA hacker's weapon library“ "Eternal blue" will scan windows machines with open 445 file sharing port, without any user operation. As long as the machine is turned on and connected to the Internet, criminals can plant blackmail software, remote control Trojan horse, virtual currency mining machine and other malicious programs in computers and servers

1. Install the latest security patch for your 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, 360 "NSA Arsenal immune tool" can be used to detect whether there are loopholes in the system, and close the ports affected by the loopholes, 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, windows 2003 or windows 2008 / 2012 / 2016 upgrade to Windows 7 / windows 10 as soon as possible.

4. It is a kind of computer virus that can encrypt computer files

to protect computer virus, just install an antivirus software,
install a computer housekeeper, with real-time protection function,
after it is turned on, it keeps running in the background, so that the virus will be automatically found and deleted when it enters the computer