I just think it is prudent to store critical personal information offline. I don't use Internet Banking and I have got rid of Credit Card apps. I just ring my bank about any transactions I need to make like paying off Bills. Research a few years back by a Consumer Watchdog found that the most secure online banking was only 85% secure - for me something like that would have to be 100% secure. Sure I will use the Browser for Shopping when needed but other than that I don't store personal information about me or anyone else. Always backup data off-line (no internet) as ransomware attackers can now identify the make and model of external storage devices to encrypt and attack).
View this very informative video on security in this post I made: