The online message is clear and frightening.
They say they're from the FBI, and you must send them $300 or you'll be prosecuted for child pornography.
Belmont County Sheriff Dave Lucas says it's the second time in one week that local residents have gotten this message.
The sheriff warns residents not to fall for it.
"Well, for one thing, of course, if you're doing something illegal and we catch you, we'll come to you in person, not over the computer," said Lucas.
He urges everyone to install a good virus protection program and spam blocker on their computer.
He says this could happen to anyone.