Earlier quoted context omitted.
By "sensitive personal information" they probably just mean passwords and credit card information, not names, email addresses and mailing addresses.
Passwords could be hashed, but credit-cards are the big one you have to keep in plaintext. If you want to bill the card without asking for the number to be reentered, there's no way to avoid storing the number and expiration date. PCI does mandate that you keep less than necessary to initiate a new charge, though: you are not allowed to store the 3-digit verification code from the back of the card. Future charges fro…
Not necessarily, if you're using a payment gateway that supports token billing...