Entitlement App Sandbox Disabled

App Sandbox is the kernel-enforced confinement that macOS applies to a Mac process when the com.apple.security.app-sandbox entitlement is set. Apps distributed through the Mac App Store must run sandboxed; explicitly setting the key to false strips that confinement and grants the binary unrestricted access to the file system, network, and IPC primitives that the sandbox otherwise denies.

The rule only fires when the key is explicitly present and false. Plain absence means "not a sandboxed macOS target" (typical for iOS-only entitlements) and is not flagged.

Disabling the sandbox is occasionally a deliberate choice for a developer tool that needs root-equivalent capabilities, but it is the single biggest reduction in macOS attack surface — a sandboxed app that compromises an attacker-controlled file cannot pivot the same way an unsandboxed one can.

Remove the key (or set to true) and use the granular App Sandbox sub-entitlements (com.apple.security.network.client, com.apple.security.files.user-selected.read-write, …) to grant only the capabilities the app actually needs.