Cash app is safe to use for the most part as long you follow the instruction and keep other people out of your account. You must use the password lock on your Smartphone and don’t share it with anyone. Square app has also its security pin like Touch ID, Face ID, PIN, SSN. If there are any issues, then click here to get Cash app number. https://www.email-contactsupport.com/cash-app-customer-service-number/