I think that paymet solution are updating realy slowly in the last years and still the old common questions that still not awnsred
Anything involved with other peoples money should change carefully and with solid processes in place to make sure it doesn't open the door to fraud. What are your specific concerns?
A few years ago, Paypal upgraded its services to accommodate more countries, Shrill renovated it's e+wallet to include other processors, .etc We look for much more than security, we seek ease of use, accesibilidad, amplio geographic coverage, sustainability and modernization.