How macOS checks executable code before it’s loaded and run, in macOS 10.15 and 11.0. Covering integrity checks using hashes, and validity of the signing certificate, on Intel and ARM.
macOS 10.15
A summary of all the macOS updates released over the last three days, to help you catch up with any you’ve missed.
Volume layouts are fairly straightforward until you have two or more bootable systems with Volume Groups. Details and advice for those with macOS 10.15 or 11.
Apple has just released macOS Catalina 10.15.7 Supplemental Update, which weighs in at around 1.2 GB and includes […]
New version can display contents of all system updates for Catalina and Big Sur’s boot volume group, at last.
The update to MRT 1.68 has caused problems with many Macs. Even if their cause is discovered, fixing them is usually long and complex. That silent security update is causing a denial of service.
Many users are today reporting that their HP printer software has suddenly stopped working, with worrying messages implying […]
Looking in more detail at newer tricks used by APFS on the data of files: sparse files, which can squeeze vast empty files almost to nothing; file clones; and compression, opening up in Big Sur.
CTS now schedules many important services, including syncing Calendar, Contacts, Messages, running weekly firmware checks with eficheck, and more.
Where does macOS store a list of revoked certificates, and how does it keep them up to date? The answer isn’t perhaps what you expect.
The Eclectic Light Company 