Apple Clarifies macOS 26.4 Terminal Blocks for Pasted Commands and Malware Scripts
Updated
Updated · 9to5Mac · Jun 15
Apple Clarifies macOS 26.4 Terminal Blocks for Pasted Commands and Malware Scripts
3 articles · Updated · 9to5Mac · Jun 15
Summary
Apple published a new support document explaining why macOS 26.4 blocks some Terminal pastes and scripts, detailing when users will see the new security popups.
macOS shows the paste warning when a user does not regularly use Terminal and copies a command from sources such as a website, chat agent, messaging app, or email.
“Malware Detected, Paste Blocked” and “Malicious Script Blocked” alerts appear when macOS identifies known malware in a command or script; those warnings do not offer an option to proceed.
The clarification expands on a security feature added earlier this year in macOS 26.4, which Apple says is meant to protect Mac users from Terminal-based malware.