![]() ![]() When Archive Utility unpacks and decompresses a file with a quarantine xattr, it propagates that xattr to all the resulting files. Quarantine xattrs are sticky due to the way they’re normally respected. Transfer a file using AirDrop, and the quarantine value is normally 0081 instead. That’s not built into macOS, and some methods of downloading such as curl can obtain files without attaching any quarantine xattr to them. When you download an app, perhaps compressed into an archive, that normally has a quarantine value of 0083 attached to it in the xattr.
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