Let's talk Cybersecurity

This was very educating and I have really been thinking about this
Am currently thinking of using mailwizz and my Smtp servers
As a Kind of agency or saas and really I most confess I have been worried about the security
I host my Mailwizz using Virtualmin and VPs server is from Digital Ocean , please how do I go about the security

Hello, this is really good material for the basic level. This topic will be fun to read and discover new things. I am interested to understand more in the topic of security and developing my business.