A simple demonstration on how someone might use the Twilio API to phish credit card numbers. Part 1 of 2. The full blog can be found here: https://joshuaterrill.wordpress.com/2014/06/23/credit-card-phishing-using-twilio/
I write this to educate and inform people so that they won't fall for anything like this. Don't do anything stupid like try to use Twilio to steal credit card numbers.