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macOS 26.4 warning about potentially malicious Terminal commands

In a small but very welcome move, Apple has added a message in Terminal in macOS 26.4 that warns when a user tries to paste an instruction that might be malware.

macOS warning dialog saying Possible malware, Paste blocked, explaining scammers misuse Terminal, over a scenic desktop background of a lake, rocks, and snowcapped mountains, with Dont Paste and Paste Anyway buttons
The new warning — image credit: Mr Macintosh

Terminal is the command-line app that the giant majority of users never even know about, but is extremely useful for customizing Macs. It has such deep-rooted access to the Mac, though, that it can be dangerous.

Usually the danger comes from either inexperienced users typing the wrong commands — or scammers telling them to paste in certain instructions. If a user does that, they bypass all of Apple’s security and basically hand the keys over to the scammers.

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