I was just reading about security risks associated with the referrer field and the ticket generated on Tor to probably disable it for anonymity. But I don't really understand the security risks. I have two questions, both concerning the unlinkability property in anonymization.
Let's say I'm using Tor and I go to site A and we are both using HTTPS. The communication between my computer till Exit Node is encrypted by Tor and from Exit Node to website is encrypted using HTTPS. No one can know I'm visiting website A and website A doesn't know my identity.
Now I go from website A to B, website B will know I came from A due to the referrer field. But it wouldn't know my identity. So no linkability. How would this jeopardize my anonymity?
Consider Scenario 1 using HTTP. Now data sent should be considered compromised as any one can see it between Exit Node and Website A. But what about my identity? If I don't reveal my identity in the data, they don't know with whom to associate it with. So still no linkability. Am I right?