Security changes coming in macOS Catalina: what’s changed

Howard Oakley, Eclectic Light Company:Apple laid out its plans for the changes in macOS security coming in macOS 10.15 Catalina at WWDC in June. Since then, ten beta releases of Catalina have passed under the bridge, and quite a bit has changed.
The biggest single change coming in Catalina takes System Integrity Protection a step further by separating almost all of the system onto a new read-only volume. In place of a single boot volume such as Macintosh HD, Macs running Catalina have two linked