Google will now encrypt all your backup data stored on its cloud servers as part of a new security measure for Android Backup Service.
Previously, once you uploaded your WhatsApp chat histories and personal settings to your Google account, all you had to do was to log in to your account on your new phone and download said data. The problem was that they were not encrypted and thus accessible for everyone who managed to log in to your account. To patch this vulnerability Google has now announced that the backup data are going to be encrypted with a secret key and stored on a Titan security chip.
Read more about Google’s new encrypted Android Backup Service here.