For example, if I use Gmail, and use my Gmail account to send personal information, which I don't want others to see except the intended recipient, to a Hotmail account, both in the body as well as an attachment (PDF format), then who can intercept and read this information? Is it encrypted? I know the body and attachment are encrypted by TLS between my laptop and Google's servers, but what about when it is stored on Google's servers in my Gmail account? What about in transit between Gmail and Hotmail server? And all the routers and computers in between the two servers that form part of the many nodes of the Internet? What about once it is actually on the Hotmail server? What are Google and Microsoft's policies? What is standard industry policy?