Where can I buy an HNS Handshake?

Excuse me, could you possibly provide some insight into where one might be able to purchase an HNS Handshake? I've been hearing quite a bit about it lately and am quite intrigued by the potential it holds. Are there any specific exchanges or platforms that you would recommend for acquiring one? Additionally, are there any precautions I should be aware of when making such a purchase? I would greatly appreciate any guidance you could offer on this matter.