APFS data leak bug
The Apple expert discovered in the operating system macOS vulnerability of the file system APFS, which under certain conditions can lead to the loss of MacOS data. The error is related to how the operating system processes resolved APFS images formatted in APFS format on the Apple file system.
At some point Bombich noticed that SparseBundle Image volume shows the available space, while the main disk was completely occupied. After the check, the expert found two errors in the diskimages-helper macOS, which led to this result.
So far, not so many people have suffered from the mistake.