It was the first macOS to drop support for 32-bit apps entirely. If you have old software (like Adobe CS6), this OS will break them. 3. How to download it safely

From a technical and security perspective, any site using the word in front of an OS download is almost certainly hosting malware, adware, or a phishing scam The Consensus:

: Addressed a specific flickering line issue on 2020 27-inch iMacs equipped with Radeon Pro 5700 XT graphics cards. 2. How to Secure the DMG File

Apple digitally signs all legitimate installers. A “hot download” often breaks the signature chain, preventing verification via pkgutil or spctl .