How would I go about exposing this individual?

It is a scam. Post it on a website that warns of scams. Like Mr. Jaffe said, pay nothing.

Is this a blackmailing scam?

Without question it is a scam. Pay nothing. Do not respond.

Can I get in trouble for this?

Nope. I say that because it is 100% a scam. We get this question all the time. There is no girl, just a pathetic worthless scammer. Do not pay a...

If he did this he would be committing a crime in NJ if taken without your knowledge. it is not a crime in MA unfortunately. as for your employment,...

Report the Profile to try and get it banned. If that does not stop this contact a lawyer and have them send her a cease and desist letter.

Hey, Im a business owner here in New York and I'm threaten and harassed by a customer?

Take all of the messages and contact the police immediately.

My ex is posting inappropriate pictures of me with him on a fake Facebook account what can I do?

He is violating the Order of Protection. Call the police. It won’t stop withou law enforcement.

The short answer is YES, it is defamation. He is telling people you comitted a crime in his attempt to brag about a false conquest. Speak with him...

What can I do to stop an ex from blackmailing me? He has threatened me saying if he can't have me, no one will.

Call the police. This is not a debate. His threats are alarming.

Can I sue twitter for a user posting my information?

Mr. Goodman’s answer is spot on. As a host Twitter is immune from statements made by third parties under section 230.