we do not share your data with anyone and there are many ways to control the visibility and storage life of your data here.
but the internet is a public space and you should always assume your data could be compromised.
be smart with your password, use tor or a vpn, and use pgp for sensitive communications.
I'm glad you asked this as I was in the middle of typing exactly the same thing! Totally new to bitcoin as well. So am I right in saying that if you don't have a wallet getting refunds isn't possible?→