3-4 times a year I get an e-mail along the lines of "your personal data was found in data breach for Company ABC"

1-2 times a year I get an e-mail from Company XYZ along the lines of "did you just try to change your password? If not, go in and change your password immediately"

I bet this has nothing to do with Southwest specifically, but just someone got your login user name and tried to change your password