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 having the exact same issue today, first time using blockchain. I messaged seller to apologise. Do you get blacklisted by a seller for this? I had no idea there was a 7 day holding period, blockchain doesn’t say so anywhere→