No one working at that level is going to disclose their customers and the technology agreements they have. That would be business suicide (and would ruin lives)

No one working at that level is going to disclose their customers and the technology agreements they have. That would be business suicide (and would ruin lives). Again, this isn't mom and pop shop level stuff. But I will give you a clue. Go find a list of the top 10 biggest banks in the United States. It's almost all of them. Then go find the biggest credit card companies. It's most of them.