Snapchat messages being surreptitiously downloaded and monitored by the NSA at some point where they are unencrypted (possibly only within Snapchat's datacenter

Snapchat messages being surreptitiously downloaded and monitored by the NSA at some point where they are unencrypted (possibly only within Snapchat's datacenters) is consistent with what was revealed in Prism. I know that most companies have updated their standards to treat any network traffic as insecure since Prism but it's possible Snapchat doesn't. Also as I understand it the NSA also has no legal issues with sharing any messages intercepted with the UK so long as one of the parties to the conversation is not a US national or on US soil.