From Newsgroup: uk.comp.sys.mac
It seems that macOS 26.4 has introduced a safety measure to help prevent
users entering or pasting in potential harmful Terminal commands.
<
https://forums.macrumors.com/threads/macos-26-4-introduces-new-security-feature-for-terminal-commands.2479927/>
As the article says:
We have yet to determine exactly which commands trigger the warning, which
does not always appear. For this reason, always be careful. If you are unfamiliar with how Terminal works, it is probably best to avoid using it entirely.
--
Cheers, Alan
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