macos-security-and-privacy-guide

CRITICAL E005: Suspicious download URL detected in skill instructions.

• Suspicious download URL detected (high risk: 0.80). The raw GitHub URL to Homebrew's install.sh is a direct shell script intended to be fetched and executed (curl|bash), which is a high-risk distribution method because running remote scripts can deliver malware even if it appears to come from a well-known project.

MEDIUM W012: Unverifiable external dependency detected (runtime URL that controls agent).

• Potentially malicious external URL detected (high risk: 1.00). The guide contains a runtime command that downloads and immediately executes a remote install script via curl/bash (https://raw.githubusercontent.com/Homebrew/install/HEAD/install.sh), which fetches and runs remote code at runtime.

MEDIUM W013: Attempt to modify system services in skill instructions.

• Attempt to modify system services in skill instructions detected (high risk: 1.00). The skill includes numerous privileged, state-changing instructions (sudo commands) such as creating user accounts, editing system files (/etc/pf.conf, /etc/hosts, /etc/ssh/sshd_config), disabling SIP, and adding trusted root certificates, which directly modify and can weaken the host system.