The Google Voice Code Scam - How it Works?
A scammer contacts a potential victim about an item for sale and says something like, “There are lots of scammers on Craigslist these days. I need to make sure you’re really who you say you are, so I just sent you a six-digit verification code on your phone. Text me the code to prove you’re a real person.”
If the potential victim sends the code, which was actually generated by Google, the scammer will use it and the potential victim's telephone number to set up a new Google Voice account. (They need a valid, working phone number to do this.) They’ll then use this new account that’s linked to the potential victim's phone number to call or text future scam victims.
To prevent being involved in this Google Code Voice scam, do not enter any six-digit codes on calls or texts from Google unless you are the one who initiated the process and requested your number to be used on your Google Voice account.