macOS High Sierra: Rischi e Raccomandazioni

macOS High Sierra (version 10.13), released in 2017, is an older macOS version that Apple last supported with security updates until late 2020. Since then, there have been no new official updates or security patches released for High Sierra. As of 2025, Mac computers running High Sierra will not receive any further official software or security updates from Apple, which poses a risk for security vulnerabilities if used for internet activities ^{[2] [9]}.

The latest available updates for High Sierra were maintenance releases such as macOS High Sierra 10.13.3 aimed at improving stability and security during its supported period, but these updates were distributed up to around 2020 only ^[3].

High Sierra was designed as a refinement of macOS Sierra with performance and technical improvements, but its hardware support ended with machines up to mid-2010 models and a few exceptions ^{[1] [4]}. Newer macOS versions have dropped support for these older Macs.

Thus, in 2025, no official update or upgrade path from Apple exists for High Sierra. Users of Macs on High Sierra are recommended to consider upgrading their hardware or switching to later macOS versions for ongoing support and security.

In summary:

• No official macOS High Sierra updates after 2020.
• Using High Sierra in 2025 means no security patches or feature updates from Apple.
• High Sierra is legacy software suitable mostly for offline or specialized use on older Macs.
• Upgrading to a newer macOS or hardware is advised for security and compatibility reasons ^{[2] [9]}.