The cPanel login should be HTTPS.
Hello,
At OneSite, we use strict security measures to ensure that your information is always safe, and of course, we will never sell your information to third parties. Our servers are secure and the information you provide us through the whole https://onesite.co/ (including cPanel) is encrypted.
Our cPanel uses self-signed certificates. Self-signed certificates work exactly like a certificate purchased through an SSL Certificate Authority, except that they are NOT signed by a Certificate Authority. Instead they are signed by your server; hence the term “self-signed”.
At OneSite, your data is always safe