Cash App Processes Payments Using Debit Cards As Purchases Which Is Why These Rewards Are Available Similar To Any Other Debit Card Purchase You Make They Do Not Charge A Fee To Use A Debit Card As A Payment Method Cash App S Website Says The App Employs The Latest Encryption And Fraud Protection Technology To Protect Its Users As A Security Measure The App Will Send You A One Time Use Code When Logging Into Your Account You Can Take Additional Steps To Protect Yourself When Using Cash App By Choosing A Secure Password And Pin And Reviewing Any Notifications Or Alerts You Receive To Confirm That Transactions Are Legitimate Users May Be Contacted With Claims Of Fabulous Cash Prizes But In Order To Receive The Prize They Must First Send Money Cash App Doesn T Require Any Cash App User To Pay For Any Contests Or Promotions So Requests To Send Funds In Order To Claim A Prize Are Likely Fraudulent On Instagram Hopeful Entrants Leave Comments On Cash App Instagram Posts Scammers Then Jump On These Posts Using Fake Accounts Pretending To Be The Legitimate Firm Such As One Named Cshfridayoffical And Request Money For Verification Purposes As An Example Users Would Be Asked To Send 10 Or 20 In Order To Claim 500