An XML Document containing sensitive information

<?xml version='1.0'?>
<PaymentInfo xmlns="http://example.org/payment">
  <Name>Elliotte Rusty Harold<Name/>
  <CreditCard Limit='1000' Currency='USD'>
    <Number>1234 5678 9012 3456</Number>
    <Issuer>Citibank</Issuer>
    <Expiration>03/02</Expiration>
  </CreditCard>
</PaymentInfo>