I made a purchase on a sketchy site (during Covid when things were hard to find). A day or so later, some unauthorized transactions were made on my card. “Bank” called from actual number of my bank, to verify if I actually made the transactions. provided some of my personal information, transaction amount etc then asked to verify ssn. It was very convincing.
Luckily I refused because I know anyone can call you claiming to be any number, and I didn’t give out any info, and said I would call back that number (my bank).
Bank had no knowledge of a call.
15 minutes later, get real fraud department call from my bank. They just wanted to know if it was fraud or not and didn’t ask for any other info.
Moral of the story: if someone calls you, never give out personal info. Tell them you will call back if needed.
My bank sometimes call me with questions about verification, as I travel a lot and have weird purchase patterns that can span several continents over a few days.
But it's easy for me to verify that it's them: Not only is Norwegian a rare language among Nigerian princes, but I use a tiny local bank so I recognize them by the dialect.
And even if it were a scam verification, they only ask for relatively inconsequential information, such as how much I have in my savings account, where I use my card the most, and roughly how much is paid into my account by my employer every month.