Yes, this service uses the very latest internet security certificate provided by RapidSSL . Whenever you visit a secure site, notice the address line on your browser says "https://".
The "s" shows that you are now visiting a secure site. Also, a small lock should be visible on your browser. Click on the browser's small lock icon for information on any secure site and to see if their certificate is valid.
Remit-online.com also utilizes the latest vulnerability scanning provide by Security Metrics Inc. verified by this seal: