Methods, secure elements, validation entities, and computer program products for effecting secure communication of payment information to merchants for Internet-based purchases. Payment information for a user's real payment information is installed in a secure element of a computer, the payment information may comprise a pseudo PAN number for the portable consumer device provided by a validation entity. The secure element is shielded from the computer's operating system to thwart hacker attacks. The user accesses the secure element to make a purchase. In response, the secure element contacts the validation entity with the pseudo account number, and in response obtains dynamic payment information that the secure element can used to effect the payment. The dynamic payment information comprises an account number that is different from the pseudo PAN, and which has at least one difference which respect to the user's real payment information.