Originally Posted by InfoGuy

There are many sponsors who don't even have SSL enabled sites for their affiliate programs. Uploading highly sensitive documents to them is just asking for trouble. I'm not even sure I'd be comfortable uploading documents to CCBill, if asked, given their antiquated control panel.

While I believe uploading documents to Cambuilder is low risk, there is still potential risk. British Airways just announced today that they were hacked and exposed confidential customer data, including payment info. Heck, even the Pentagon was hacked.