To my notice,they are many genuine sites that one can use to work online.Most of it all there is away you can deal with scammer threat.Paying methods have increased with security measures keenly observed.
Here are some of the trusted sites that i used with no regrets
1)Guru.com
2)upwork
3)fiver
for more will keep you updated
Good luck.

do you belive in someone you can’t see?