Without a doubt, Cash app customer service demands your SSN to check your character. It is essentially mentioned any administration antagonistic to unlawful assessment evasion and against charge shirking. Here is a law, that makes it imperative to give your SSN. You don't have a need to enter your full SSN, enter simply the last four digits of it. Having such sort of caution licenses them to attest your personality, and by which they can undoubtedly get questionable activity.