I am sure you hear this at least once a month unless you are dead!
Do you think you are safe and/or more secure by verifying yourself with countless services by using the last 4 digits of your SSN?
I am here to explain to you why this makes things less secure!
1st
Why do most non-social security, non-banking services even have it to begin with. It has nothing to do with my taxes or SS so why do you keep it stored in a Database somewhere that it is even more exposed to hackers?