TLDR Tech / InfoSec
No Paste for You! Reverse Engineering Apple's ClickFix Protections
Patrick Wardle reverse-engineered the ClickFix protection in macOS 26.4, linking it to two undocumented Endpoint Security events and revealing details like source and target processes along with clipboard contents. This protection requires a System Integrity Protection check, which prevents third-party tools from accessing the same kernel-level authentication used by Apple. Without a public Endpoint Security paste event, defenders must rely on less reliable keystroke monitoring methods.
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