Why is MoonPay asking for my SSN?

Hello there, I'm curious about something. Why exactly is MoonPay requesting my Social Security Number (SSN)? As someone who's cautious about sharing personal information online, I'm wondering if this is a standard practice in the cryptocurrency and finance industry. Could you please elaborate on the purpose behind collecting this information, and what measures MoonPay takes to ensure the safety and security of such sensitive data? Thank you for your time and consideration.