From the Model Mayhem FAQ:

How do I keep myself safe on Model Mayhem?
We do our best to keep Model Mayhem as safe as possible, but you should be active in protecting yourself.

Check out our Member Safety article to learn how to keep yourself safe on Model Mayhem:
https://www.modelmayhem.com/education/member-safety

Here are some other great resources:
  • Deal with Unprofessional Behavior
  • Avoid Scams!