Some of them are.
Friend of ours is an intel analyst/officer with an agency.
Couple months back he got a call from the FBI verifying many particulars then going into more detail about bank accounts, house, business things that eventually even HE figured out were way outside what the FBI would do on a telephone interview/investigation prior to arrest (is what they told him).
He hung up, made some calls, more calls, got the FBI on this one, called banks, etc. His business account had been drained of $50,000, title to their home transferred (they were able to stop that).
Me, I don’t answer the home phone at all. Rarely answer my cell. I don’t recognize your number, your name’s not on my contacts list, leave a message. I don’t pick up. On my cell, and I’ve got several hundred numbers blocked on THAT number.
We live in such times... I tell people I’m still young enough to appreciate technology, but I’m old enough I really resent it.
I’m looking at getting a stupid phone, like a Jitterbug, with Patriot mobile in a couple years (once they cover the part of the state where our farm is located... just a few miles yet), or have my wife get her ham license so we can talk on 2M through repeaters when needed, screw telephones.
There must be suckers or they wouldn’t keep doing it.
I just do it for entertainment and never divulge any factual information.
Sometimes I just yell “STOP CALLING ME!”