How do you outsmart a scammer?

How can one effectively outsmart a scammer in the world of cryptocurrency and finance? Are there specific strategies or tactics that can be employed to identify and avoid falling prey to these deceitful individuals? What are some common red flags to look out for when engaging with potential investors or trading partners? Additionally, what steps can be taken to protect oneself financially and legally in the event that a scammer does manage to slip through the cracks?