Please do the followings measures to protect your account and server from hackers.
1- Install latest antivirus and firewall.
2- Always check and patch installed scripts for vulnerabilities. (eg. wordpress)
3- Enable 2 factor authentication at your cpanel login, for details watch this video https://youtu.be/P78dS6Bza_4
4- Never open files in emails from unknown sources or enter credentials asked via email.
If you have any questions, do not hesitate to contact us.