GitHub hosts repositories for all three types, though the first two are the most common under the "fake sms" umbrella.
Companies hire ethical hackers to perform simulated phishing attacks. Using a closed-source fake SMS tool (hosted on a private GitHub Enterprise server), the security team sends a text to employees: "HR Bonus Alert: Click this internal link to claim your Q4 bonus." The tool tracks who clicks. Those who do require immediate security training. fake sms github