Quarantine flags first appeared in 2007. This explains how they work, what they do, and the differences between app and document quarantine.
com.apple.macl
All about xattrs: their origin, where they’re stored, how they’re named and typed, how to find and work with them, and their common problems.
Who’s been ghost notarizing other people’s apps, and is Catalina wasting time to check whether shell scripts are notarized?
Some files rely on these to work properly. What happens when you share such a file using your iCloud account? The answer isn’t simple, but here are full details.
The behaviour of quarantine flags, SIP flags, and the mysterious new com.apple.macl attribute, which never ceases to puzzle.
Tips to help you investigate and tackle problems arising in Catalina with its new privacy protections, particularly those of folders such as Documents.
When it comes to basics, we like consistency. Imagine what life would be like if every so often […]
When you can’t save to somewhere else, only to your startup volume, even though you’ve shown user intent. Privacy through perversity perhaps?
How does Catalina’s new privacy protection extend to folders such as ~/Documents? New information fills in detail.
The Eclectic Light Company 