Where can you buy USTC?

Excuse me, I'm interested in purchasing USTC but I'm not quite sure where to find it. Could you please enlighten me on the various platforms or exchanges where I can acquire USTC tokens? It would be great if you could also mention if there are any specific requirements or steps I need to take before I can make a purchase. Additionally, are there any security measures I should be aware of when buying USTC to ensure the safety of my investment? Thank you for your assistance.