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.
sia coin: earn crypto for sharing storage
I think you need a few terabytes but if you have the storage it's a decent coin to earn readily tradeable for btc→