服务器mysql被攻击,索要比特币

To recover your lost Database and avoid leaking it:
Send us 0.03 Bitcoin (BTC)
to our Bitcoin address 1BhYSTiD9QHpPqZTdCuzXFKUhHShqvyWd7
and contact us by Email with your Server IP or Domain name
and a Proof of Payment.
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Backups that we have right now: javaee,
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1. 首先就是改端口号

2. 其次就是用户名和密码要足够的复杂,尽量数字、大小写字母、符号都要包含

3. 云服务器的安全组设置

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