There are many options to secure your Moldova VPS. The most important thing to do immediately is to disable the root access and logins. Once done, it will stop hackers from attempts to break into your server by trying brute force attacks.
Malicious scripts connect to the default SSH port easily. That’s why it is necessary to change them. It is more complicated to use the SSH port if its location is not known. Always keep all the modules and components of your server updated. For that, run the usual updates. If a panel is used, it also needs to be updated constantly. Never ignore security patches. They shall be applied as soon as they are released.
Disable all the network services that you don’t use. The same applies to user ports. They are very easy targets for hackers. “iptables” or “chkconfig” can be used to check all the services and disable those that you don’t need.
Most likely, you don’t need all those packages and modules that are available. Therefore, consider disabling them. Every additional service, especially the one that you don’t use, is an additional vulnerable place in your security system. Don’t install any components or software from untrusted sources. This step will also help you to eliminate a good number of threats.