I will tell you exactly how he did it so any other person who wants to take advantage of you flawed system can do it as well.
He went to EVO, bought someones full information. Had a fake ID made with all that information, dob, address, ect.
total cost $30
Should have put the 1BTC in escrow lol.
Provide a verified token from the site or GTFO

Do you have an idea about how many times I heard this b*****t? Here is a hint: it is in the hundreds.