Data integrity is just a small part of security. I wouldn't even call that security at all. I mean, we technically shouldn't trust our HDDs and should do data

Data integrity is just a small part of security. I wouldn't even call that security at all. I mean, we technically shouldn't trust our HDDs and should do data integrity checking at every level. I'm interested in what they mean here by security, and what things they support beyond the normal integrity features of most modern file systems (zfs, btrfs).