this post was submitted on 18 Aug 2025
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So I decided to use my really old pixel 3a as a test of sorts. It has calyxos, with always on VPN (surfshark). I have no accounts on it, google or anything else. I usually use it for streamio or tiktok.

But I have noticed that I am still getting video recommendations based on what my flatmate watches (we share an internet router). Or what I watch on my other non-VPNed devices.

So what gives?

I am looking for an explanation as to why its happening, not just how to fix it. Btw I also use private DNS so dns leaking is not the likely culprit.

Anyone knows how to debug this info leak?

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[–] SpookyMulder@twun.io 10 points 4 days ago

Occam's Razor: coincidence is the most likely explanation. Most of us aren't as unique as we think we are. It doesn't take very long for a keen observer (or algorithm) to profile our behavior based on direct surveillance.

Think of it this way: if you were the algorithm and were looking at a detailed account of every second of time you spent on the platform, and also had the same accounting for every other user... what inferences and connections might you, the algorithm, be able to make about you, the person?

It's a feature, not a bug, for platforms to recommend relevant content. It's also intrinsic for you to engage with the platform authentically, engaging with it in a way that aligns with your interests, preferences, and demeanor. Relevant content drives engagement. Engagement drives revenue. Irrelevant content does the opposite and serves to benefit no one involved. The popular platforms blew up exactly because they are so good at knowing what you want to see even before you do.

In short: no amount of tech can save us from ourselves.