We also share those same concerns.  That's why rather than having our own private payment processing portal we elected to let PayPal handle all of our Transactions.

Why?  PayPal 100% Protects BUYERS & SELLERS from FRAUD & SCAMS.  Also, your sensitive financial information isn't shared with us.

CHECK OUT THIS VIDEO:

NOTE:
If you are still nervous about using your primary card(s) then think about picking up a PRE-PAID card.  Using pre-paid cards are a way to engage with online merchants to build up trust before using your primary card(s).  Some folks exclusively use PRE-PAID card for internet $$$ engagements.