Can Someone Hack Your Cash App If They Have Your Username? Can Someone Hack Your Cash App if they have your username or not? No, they can’t. As long as your password, registered phone number, and linked email address is safe against unauthorized access, it won’t be possible for someone to hack your Cash App account. However, you also have to keep an eye on the activities you perform from your Cash App account on a daily basis. In case of any problems with the security of your account, you should contact the troubleshooting specialists right now. Also, you can refer to the official help page where you may also receive essential pieces of information. https://www.cashappmonks.com/blog/can-cash-app-be-hacked/