Photographed Credit Card Payment at the Counter
If you end up using your credit card in Brazil (my advice is that you should never use it outside of your country), there is a scam that maybe you can be a victim, some dishonest sellers use their phone to take a picture or video of your credit card. This can happen in seconds while they talk you to you and you don't even notice. Credit cards are really dangerous and if you use them always check your bank movements to detect any fraud as fast as you can. Always keep an eye on the card to see if the seller makes anything suspicious.