Don't Reply to iPhone Thieves
"The messages prey on people's emotions by giving them the impression they have access to personal things such as photos, even if they actually don't," Campbell said. "Many people don't think clearly, just think about wanting their lost data or not wanting it to get in the wrong hands." More here.
Suspect most reading this would not fall for it, but if sharing saves one person from these scumbags it's worth posting.