Flood from server to digitalocean, how to fix?

Question

Django

Good day, dear ones. Straight to the point.
On digitalocean there is a droplet on which nginx + uwsgi + django 1.8.3 is installed and it's all running on ubuntu server 14.04. The domain is attached to the server. There is one root user on the server. I connect via ssh.
The problem is that at one moment the droplet with the above software starts to flood and so on until you kill the process that is constantly generated, but after a while the process is generated again, only with a different name and PID. The thing is that this happens if this software is installed on it. I tried to protest on an empty droplet, but there was no flood and I turned it off. So I can not say for sure because of the software whether it is.
The screenshot shows the 1st process.
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I ask for advice on how to protect yourself from this problem and figure out how the virus gets access to root.

Answer 1

In general, the problem is not solved
Read articles about setting up security in Debian
Set up a new droplet
Review your code
Copy the project to a new droplet

Answer 2

There is one root user on the server. I connect via ssh.

Is a password or key being used? If the password, then it could be stupidly picked up, there are a lot of scripts that do this.