The days of transmitting data in clear text are approaching their end. You should assess all your communications and apply encryption to all systems that can realistically support it. From Email to Virtual private networking, you should use secure protocols like SSL for websites, secure email, and secure tunnels with VPN and encrypted traffic.
You are not alone, businesses from fortune 500 to small home based businesses need to protect digital assets.
Across Google, encryption has grown to over 90% in 2019 from about 50% in 2014.
So, start with an assessment and list all systems that can support encryption, procure the certificates and deploy them accordingly.
Yes, there is a cost to pay for the certificates and possibly to apply them, but that is a small price compared to losing your valuable data or being out of compliance.
IoX security can help you deploy Secure networking and data protection.