The backup is done in the well known zip format, can be encrypted (AES), and the new version now integrates a restore function for whole directory structures and single files also. Personal Backup supports a plain copy, and full, differential, and incremental backup.

Personal Backup is a backup utility for backing up your personal data. It is perfect for that purpose, but it cannot backup files in use. So the files you want to secure must be closed, and therefore Personal Backup cannot be used to backup you system drive or system files.