The mystery behind those creepy 'Unknown' spam calls

Scammers have developed more sophisticated ways to steal information using targeted phone scams using information that seems legitimate.

"I have received multiple random unknown calls (in the past two months), and they always start with the person calling me on the phone (listed as unknown) and providing my full name. Absolutely Correct. Then, ask if I am that ‘name, in (insert city). Then, when I say no, you have the wrong guy, they provide a birthdate and ask if it is mine, which, of course, it is Not. Then, they politely apologize, say thank you, and hang up. At that point, you realize that they never told you who they are representing. Maybe I’m paranoid, but it just seems strange." Kurt "CyberGuy" Knutsson is an award-winning tech journalist who has a deep love of technology, gear and gadgets that make life better with his contributions for Fox News & FOX Business beginning mornings on "FOX & Friends." Got a tech question? Get Kurt’s free CyberGuy Newsletter, share your voice, a story idea or comment at CyberGuy.com.

James' experience is not unique. Many people across the country are reporting similar incidents, where callers seem to have a partial set of personal information and are attempting to verify or expand upon it. This tactic, known as "social engineering," is a common method used by scammers to gain trust and extract valuable data.