After posting my sample implementation of accessing Amazon Simple Storage Solution (S3) via Silverlight, I reflected quickly and also chatted with some AWS engineers. Cross-domain Policy One thing that you should never do is just deploy a global clientaccesspolicy.xml file blindly. Often times in samples, we (I) do this. I need to be better about this guidance to be honest, so I’ll start here. As an example, for the S3 cross domain policy file, we really should add some additional attributes to it to make it more secure. Since we know it is a SOAP service, we can...