Both of those posts have more information on the implications of this exploit-it hasn't been confirmed, but it certainly appears to be yet another front in China's effort to crack down on civil liberties in Hong Kong-but for our purposes, let's focus on how Apple keeps its operating systems up to date, because that has even wider implications. According to Google's Erye Hernandez, the vulnerability ( labeled CVE-2021-30869) was reported to Apple in late August of 2021 and patched in macOS Catalina security update 2021-006 on September 23. You will be prompted to connect to your WiFi network during computer startup.News is making the rounds today, both via a write-up in Vice and a post from Google's Threat Analysis Group, of a privilege escalation bug in macOS Catalina that was being used by "a well-resourced" and "likely state-backed" group to target visitors to pro-democracy websites in Hong Kong. This will instruct your computer to use the latest system software rather than your current system software. But on step 2, the keys you want to press are “Command” + “Option” + “R”. If you want to upgrade to macOS Catalina, but your computer is running too poorly to do so because of this bug, you can follow the steps above to reinstall macOS Mojave. Option 3: Upgrade to macOS Catalina via Recovery Mode Wait for your computer to reinstall, which can take anywhere from 20 minutes to a few hours depending on the speed of your Mac and of your internet connection.Each person will see slightly different things here depending on how your computer is set up specifically but just follow the prompts. Click continue, agree, choose your hard drive, and follow the prompts to unlock your drive using your computer start-up password if prompted.This will not erase anything from your computer, it will simply slip a new copy of your current macOS system software underneath of your data. Once you see the screen for macOS Recovery, choose the option to Reinstall macOS and click “Continue”.Keep holding those two keys until you see the Apple logo.Press and release the power button then immediately press and hold two keys on your keyboard: “Command” + “R”.Price: Free Option 2: Reinstall macOS Mojave You can download the upgrade in the Mac App Store. So if you were planning to upgrade to Apple’s latest system software anyway, this will take care of the problem. This problem doesn’t affect macOS Catalina. To see what version of macOS you are running click the Apple logo in the top left corner of your screen and choose “About This Mac…” Option 1: Upgrade to macOS Catalina This bug only affects macOS Mojave 10.14.6. However, if your computer has inexplicably slowed, is beachballing/pinwheeling way more than normal, or basically completely stopped in the past few days, this is a pretty easy fix if you know what to do. Normally these security patches do not cause these sorts of problems, but Apple has pulled this update to prevent more people from having this problem and will likely re-release it soon with a fix. Your computer has to meet a few very certain circumstances for this to be a problem. This hasn’t affected everyone universally, as with most bugs, so it took a few days for people to figure out what was going on. Last week alongside macOS Catalina 10.15.7, Apple released a security patch for macOS Mojave that many users found has caused their computer to slow to a crawl.
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