Apple can now quickly patch security loopholes without any interruption–thanks to the new feature ‘Rapid Security Response’ (RSR). RSR does not require a reboot after installation, in contrast to typical iOS software and security updates.
“The big danger is that, because these patches are built and distributed quickly, they won’t get tested as thoroughly,” Dr. Howard Oakley, a Mac expert, told Lifewire via email. “So they could cause more problems with compatibility, hence the importance of users being able to remove them if they wish.”
When Apple finds a flaw in iOS or macOS, it issues a whole new OS update to fix it, which is a hassle for a majority of users. Even though automatic updates are selected in the settings, some of them might not update at all at first or the update may take longer to arrive.
This issue has been fixed by RSRs, which allow the OS to be hot-patched without restarting. Additionally, these patches may be smaller, facilitating faster downloads. As a result, you are immediately secure without needing to take any action.
According to MacRumors, when the Mac is restarted, macOS Rapid Security Response 13.2 (b) is automatically applied—It is also added to Safari when the Safari app is closed and then reopened. The fact that the update for Jan 9, was only 13.4MB suggests that it is yet another test.
iOS 16 Rapid Security Responses was previously released by Apple, but only for testing purposes. Prior to the actual release of Rapid Security Response updates for Mac users, Apple is testing the feature on the Mac.