Hectic with SIP problems in High Sierra, the Meltdown and Spectre vulnerabilities, then iCloud Drive’s strange stripping of extended attributes.
iCloud Drive
Don’t use iCloud Drive to copy docs between Sierra and High Sierra, as they may well lose metadata in the process. Bug or feature?
A strange problem with backups that start, but fail to complete successfully, apparently because of duplicate filenames. T2M2 to the rescue, bringing some important lessons.
The Eclectic Light Company 