黑客问题 阿里云服务器总是被黑

所有文件下面全部

这是发邮件获取以后得到的怎么处理

Hello! Your files have been encrypted cryptographically algorithm that
we can decipher only! We suggest you purchase a decoder which
decrypt all your files in a fully automatic mode on the same day after
Payment!.As we can guarantee you decrypt file for free 2-3 total
weight <= 5mb. For warranty decryption (if required) should be
sent are archived test files in the response letter (even if you have
them sent before). The cost of the decoder: Today 2 bitcoin tomorrow 3 bitcoin
payment instructions: 1. Go to https://localbitcoins.com
(or other resource) 2.Register 3. You buy Bitcoins people.
(You can pay by any method,which is convenient to you)
4. Sending purchased Bitcoins to our address listed below.
If you have any questions, you can contact support
this service, or email us. Confirm the payment you need
to make a scan of the operations and send to the letter.
Our Bitcoin wallet: 1C7CDJ1LcQj6gXujU5H6VCWiiXXuQgGrQX

遇到了同样的问题，在CSDN看到了，希望阿里云团队能够给出正确、标准的答案~请查看