This April 2022 article describes bugs that were not fixed in either Big Sur or Catalina Apple patched critical flaws in macOS Monterey but not in Big Sur nor Catalina by Thomas Claburn of The Register.Few are aware that Apple doesn't patch every security vulnerability present in the two previous macOS versions - and, surprisingly, that even goes for 'actively exploited' (in-the-wild) vulnerabilities." Looks like there is more to come here. Quoting: "Apple's ostensible policy about Mac operating system updates is that security issues get patched for the current and two previous major macOS releases. An inconvenient truth about Apple security updates by.2021 article describes a bug in Catalina that was not fixed for 234 days: PSA: Apple isn't actually patching all the security holes in older versions of macOS by Andrew Cunningham for Ars Technica. Monterey was released OctoBig Sur was released NovemCatalina was released October 7, 2019 Ventura (aka version 13) was released October 29, 2022.Over the 2021-22 cycle, the current version of macOS, Monterey, received 342 security updates, Big Sur got 202, and Catalina got 146. Old versions get some, but not all, security fixes. APFS is cited as an example of a critical sub-system that loses all support once there is a new version of macOS. Older versions may get security bug fixes but non security issues are not fixed. A detailed look at when to upgrade to a new version of macOS. Home truths about macOS by Howard (Nov 2022).In October 2022 an official policy: About software updates for Apple devices from Apple.Apple had no official policy regarding bug fixes on old macOS versions They had somewhat been updating the previous and second previous editions. The current version is patched for a year from its initial release, at which point a new version of the OS is released.BUG FIXES How long will a copy of macOS get bug fixes?.While there, also review "Remove download list items" which can automatically remove the names of the files you downloaded. On the menu bar, click on Safari -> Preferences -> General tab -> "Remove History Items". Safari can automatically delete your browsing history (as of Dec.Click on Safari in the menu bar -> Preferences -> Passwords and look for any security recommendations (Oct 2021). For content blocking in Safari, I have heard good things about 1Blocker.To use uBlock Origin on macOS, install Firefox. The excellent browser extension uBlock Origin is not supported on Safari.The other is Oversight from Objective See (free as of Sept. Two macOS utilities can warn you when software is using either the microphone or camera.It costs $20 to use on 3 Macs and there is a free trial. This August 2021 article suggests using DriveDx to monitor the health of the SSD in a Mac.After that, one computer is $40/year but the cost per computer is much cheaper when you buy it for multiple. As of March 2021: it is free for 14 days. I have heard good things about Malwarebytes for Mac.It can clean up temp files, verify the structure of the system files, remove problematic folders and files, rebuild various databases and indexes and run other assorted maintenance tasks. Leo Laporte, aka The Tech Guy, recommends OnyX a free multi-function utility.It shows the sizes of files and folders so you can easily see which folders are consuming the most disk space. Leo Laporte, aka The Tech Guy, recommends Disk Inventory X, a disk usage utility for Mac OS X.If you have an M1 MacBook be very careful when closing the lid as per: Apple's M1 MacBook screens are stunning – stunningly fragile and defective, that is, lawsuits allege (Sept.I am not a Mac user, so the below is mostly links.
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