"We're hearing a lot about these scams," says Ohio Attorney General Mike DeWine, who urges consumers to report scams to its consumer complaint unit.
Facebook users are even provided phony identification from scammers pretending to FBI and CIA agents to bolster credibility and decrease suspicion.
But before Facebook users can "claim" their winnings they must first send hundreds of dollars in cash to complete the transaction.
"The hook is — the reason it works so well — it's a friend contacting you," said DeWine. "You think it's a friend."
In this case, Facebook users respond to what appears to be a message from a friend. They're told they have been selected as "winners" and are given instructions on how to claim hundreds of thousands of dollars.
Instead, their "friends'" Facebook page has been hacked, allowing scammers to pose as legitimate friends.
In one recent case, a Cuyahoga Falls woman was scammed out of $1,200 before realizing it was all a scam.
The FBI estimates scams like these cost American consumers millions of dollars every year.