hi. Thanks for your question. If you are to lose or get your card stolen then as a cardholder, you will be able to block it instantly from the States treete Site. There are daily spend limits on number of transactions and volumes, any suspicious activity (ie. online purchase with higher than customer average spend at a new merchant) is likely to be caught by our processing platform, resulting in declined transactions. Lastly, as a cardholder you will be able to file a chargeback just like you would with your credit card.