POST is secure as long as the connection over which you are POSTing is secure.
If you're interacting with a bank's payment system, they should have an API or at least some documentation about how to talk to them properly.
How to send information to a page that I do not control
Moderator: General Moderators
Re: How to send information to a page that I do not control
Real programmers don't comment their code. If it was hard to write, it should be hard to understand.