The only thing I can figure about this form of communication and detecting lies or deceit is one idea I keep in mind. If it doesn't make sense then it probably isn't accurate. Also stated in the south, "If it don't look right, it ain't!"
Someone trying to deceive will trip themselves up by answering too quickly, which will cause their prior statements to logically conflict.
If it's too good to be true then it is false. Nothing is free, money is not made by doing nothing. You aren't going to make 3k a week at home in your free time 15 minutes a day. These same guys are not going to let you in on a secret method they used to make millions. Would you tell someone how you make the best cookies and make millions of dollars a year from the recipe? Anyone who asks for PIN numbers or passwords is attempting to hack or take your identity.
Difficult to detect these guys, just have to be smart and use the if it doesn't seem legitimate it probably isn't idea.