What are the best practices for using these apps? Just because you’re using a messaging app that offers end-to-end encryption, it doesn’t mean that your conversation is totally secure.

A 'cyber espionage campaign' is ongoing and federal authorities are warning people to keep their data safe. One way to do that is encrypted messaging.

With end-to-end encryption, every user of an encrypted chat app holds the unique code to unscramble a message sent to that account.

The issue is the iCloud backup itself—the general iPhone backup that you can use to restore your settings, home screen, app installs and data that’s only on your phone.