Apple knows that a Mac user checked the revocation status of the TOR Project’s signing key. They don’t log your IP, your Mac caches the result so it’s not even

Apple knows that a Mac user checked the revocation status of the TOR Project’s signing key. They don’t log your IP, your Mac caches the result so it’s not even every time you launch the browser, and if knowing when your browser was launched is a successful timing attack it means the TOR protocol is too broken to be used – which I rather doubt is true regardless of what random commenters may confidently assert.