According to Business Insider, if your iCloud account has been hacked, a full backup of your account can be downloaded. This gives the hacker complete access to all your personal information. Here is a scarier thought, not only will the hacker have access to all your personal data, but they will have the ability to stalk you in real time by using the Find My iPhone feature.
What can you do to protect yourself? Not much. Once you have been hacked, delete your backups and create new passwords, which entail will create more work for the hacker.
So here is the question is your personal security worth the great and easy features of the iCloud?