So a bit ago I got an add for “canned rambutan”. I had looked up Rambutan a few days prior after hearing it mentioned 10 hours into the video game Baby Steps. I wasn’t using a VPN at the time and I didn’t have fingerprinting protections active but I only mentioned it to a few sources (according to my browser history) all of which generally are implied to be private.
Which of these do you think is the reason the ad networks know?
- Wikipedia
- Startpage Search
- Duckduckgo Search
- My ISP
- Firefox
- My Firefox Extensions
- Kubuntu
- CachyOS
- The omnipotent algorithm connecting my mentions of Baby Steps with my progress through the game.
- I must’ve forgotten a mention of it elsewhere?
Any guesses as to where the weak link is?


I would guess the likely culprits are
Firefox extensions
Search engines
Wikipedia
Other search results you may have opened or pre-loaded (not a default Firefox behaviour)
I don’t think Wikipedia is a likely culprit. I haven’t heard anything about them selling data.
I have noticed ublock origin block counter go up on Wikipedia but haven’t looked into why
I might be wrong but I believe the ‘other annoyances’ option in uBlock Origin removes the Wikipedia “donate” banner. That could be what that is.
You’ll need to provide all the sites you visited immediately after each of the ones you searched. Your
originheader will give that info away freely. So if it’s in the query parameters of the URL, then you go to Facebook, it’s as easy as{k: v for k, v in (pair.split("=", 1) for pair in response.headers["origin"].split("?", 1)[-1].split("&"))}