Here are some basic security steps we recommend after you have launched your dediserve windows cloud server
1) Install a good Antivirus, e.g. ESET NOD32, AVG, Kaspersky, AVAST.
2) Configure your firewall to only what you need, e.g. Disable all un-needed Incoming Rules
3) Lock down certain Services to YOUR IP. Within your advanced firewall settings, doubleclick your inbound rule for RDP (port 3389), click scope and add your IP address into the “Remote IP Address” section.
4) Turn off Auto-Update. Update manually regularly, and be sure that hotfixes/security patches will work with the software you are running
5) Take regular backups before running the lastest update, so you can easily roll back if it breaks something..