Take the tour ×  Today I was purchasing a gift from Singapore
Groupon website. And then I realized that what I have to do is
simply login and hit the "submit order" button, because they
store my credit card information from my previous purchase.  By
credit card information here I mean: credit card number, credit
card validity date, and security number behind the card (CVV2).
Which are more than enough for a thief to empty your bank
account (more easily if it's a Debit VISA card).  I'm sure that
they've stored my credit card information because I started with
a "clean browser" by using Firefox's private browsing. As you
can see below at the screenshot right after I clicked "Buy" on
any of the deal, I don't have to enter anything, they have it
all. Even they're showing the validity date on the screen:
enter image description here  I somehow kind of know that it's
illegal to store customers' credit card information especially
for being ready to use for the next purchase (so that they don't
have to re-enter the