This is the most important article about your profile, so here is the plain answer first: nothing about your trading is public unless you choose to publish it. Your full history does not go public automatically. The default is private.
Two separate places
Activity (private). Only you can see this. Every PnL card and milestone the platform logs lands here automatically, so you have a complete private record of what you have done. A banner at the top reminds you it is not visible to anyone else.
Social Feed (public). Nothing appears here unless you explicitly post it from Activity. There is no automatic publishing to it, ever.
You choose first, then it is verified
The order matters, and it is deliberate. You choose what leaves your private Activity and goes to your public feed. Only what you publish is then verified by the platform. Your control comes first, the verification second.
Going fully private
You can set your whole profile to private from Edit Profile. Then visitors see only your name and a Private label, with your feed, tiles, badges, and bio all hidden. Saved cards that are not public are dimmed with a Private or Unlisted badge, so you always know exactly what is visible and what is not.