A developer from Brazil noticed that the recently launched macOS High Sierra 10.13 operating system leaks the passwords for encrypted Apple File System (APFS) volumes via the password hint.
APFS is a new file system introduced by Apple with macOS High Sierra. When High Sierra is installed on a computer with a solid-state drive (SSD), the startup volume is automatically converted to APFS and users cannot opt out of the transition. APFS promises strong encryption, fast directory sizing, space sharing, and improved file system fundamentals.
