There’s a new nationwide phone scam that could make you a victim with just one word.

The Better Business Bureau says the calls usually come from an unknown number, but the area code may look local. When the call is answered, an automated voice starts to introduce themselves and pitch their product before they ask, “Can you hear me?”

If you answer “yes” or “okay,” your response could be used to sign you up for purchasing the product they’re selling. They’ll then demand a payment, since they use your recorded yes as a verbal agreement.

The bureau suggests that you don’t answer calls from any phone numbers you don’t know. If you do pick up the phone, hang up. Do not engage with them. Don’t respond. Don’t press any buttons. Obviously, don’t give out personal information or confirm any details they might give you.

They also suggest that you report the incident to help save others from being victimized by this scam. Note the phone number and file a report with the BBB’s Scam Tracker. You can also report it with the Federal Trade Commission’s Do Not Call List & while there, register your number for the list so you don’t receive any sales calls.