In order to protect your Cloudimage token and your original images from being stolen, you can use one of the methods below.
Shorten your URLs and hide parts of your original image urls/repositories to protect your original images from being downloaded.
Specify which domains your Cloudimage token can download original images from. You can limit the list to few domains that you own to make sure no one uses your token on his or her URLs.
Sign your Cloudimage URLs with an SHA hash to prevent someone else from using your Cloudimage token.