ARLINGTON, Va. - If you're getting messages about unclaimed rewards, the Better Business Bureau is warning that it's a scam.

Scammers promise unclaimed rewards to trick people into providing credit card information. You might see a postcard, email or social media message saying you have an unclaimed reward at major retailers like Walmart and Target.

They'll then ask for a phone number to claim it. On the phone, you could be asked to confirm who you are, and give credit card information to pay for mailing costs.

The scammers will then try to use your credit card number to purchase items.The BBB recommends being wary of unsolicited interaction with people you don't know. And-- most importantly-- never give out your personal information if you don't know who's asking for it.

You can learn more on the Better Business Bureau site, or from USA.gov.