Payment cards. For questions about storing credit card numbers, see also pci-dss. For questions involving the physical object, see also smartcard (if the card has a chip).

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3
votes
2answers
2k views

Send credit card info by email from HTTPS and SMTP on SSL

A client asked me to receive credit card info of his costumers by email. I know that is a very very not secure way ... But if the page with the input form is on HTTPS, and then i use a smtp (like ...
4
votes
2answers
909 views

Is a new protocol needed for credit card transactions?

It seems like many places spend a ton of time and money securing their site for credit card transactions. However, there are still millions of credit card numbers being stolen. Fraud is big business, ...
0
votes
2answers
250 views

Signing up on a paid site with a credit card

I'm building a subscription-based website that needs to accept recurring payments. The concept is much like that of Netflix, but there is also a variation between the two. When a user attempts to ...
22
votes
4answers
25k views

What is the use of stolen credit card details?

What can a person with stolen credit card details do? Buy porn? Buy tons of server resources to perform an attack? What else? I'm sure that if he buys books, shoes and bicycles or transfer funds ...
2
votes
3answers
328 views

Why do credit cards not use digital certificates?

Asymmetric encryption and digital certificates are used all over in the IT world to verify authenticity and prevent forgeries. And it works great. Why do credit cards not use some form of ...
4
votes
1answer
253 views

Has the wedge security flaw been fixed for credit cards?

According to this site http://www.lightbluetouchpaper.org/2009/08/25/defending-against-wedge-attacks/ there is a flaw in EMV. Since then has this flaw been fixed? Is it the same law as the one ...
12
votes
5answers
307 views

I need ideas for blocking a single malevolent user

Let me throw out this problem I'm having to some of my technical peeps and see if you guys have any new suggestions: We have a website that sends text messages and voice mails for our clients. ...