Can I AirDrop to anyone?

Could you please elaborate on the functionality of AirDrop? I'm curious to know if it's possible to use AirDrop to send files or information to anyone, regardless of their relationship to me? Is there a specific requirement or condition that needs to be met in order to initiate an AirDrop? Additionally, are there any security measures in place to ensure the privacy and safety of the data being transferred? I'd appreciate it if you could provide a clear and concise answer to these questions.