UNITED FIN CAS = United Financial Casualty Company = Progressive Insurance
Links: California DOI: https://goo.gl/EFnrIZ SEC Listing: https://goo.gl/wRXYMJ
No idea why they suddenly changed their display name; I've been a customer for 15 years and their charges were always clearly labeled "Progressive"… until now.
I was about five seconds from blocking this charge. Good thing I checked first, jeez.