this post was submitted on 06 Jul 2024
47 points (98.0% liked)
Privacy
30871 readers
458 users here now
A place to discuss privacy and freedom in the digital world.
Privacy has become a very important issue in modern society, with companies and governments constantly abusing their power, more and more people are waking up to the importance of digital privacy.
In this community everyone is welcome to post links and discuss topics related to privacy.
Some Rules
- Posting a link to a website containing tracking isn't great, if contents of the website are behind a paywall maybe copy them into the post
- Don't promote proprietary software
- Try to keep things on topic
- If you have a question, please try searching for previous discussions, maybe it has already been answered
- Reposts are fine, but should have at least a couple of weeks in between so that the post can reach a new audience
- Be nice :)
Related communities
Chat rooms
-
[Matrix/Element]Dead
much thanks to @gary_host_laptop for the logo design :)
founded 4 years ago
MODERATORS
you are viewing a single comment's thread
view the rest of the comments
view the rest of the comments
I don't think they use picture analyzing software for tracking. It's very resource heavy because it uses systems similar to LLMs. You can make very slight changes to your pfp (just one changed pixel is enough) for every website to avoid hash match but it's not necessary I think. If someone wants to manually find your accounts though then it won't be too hard for them.
Often websites modify your pfp too, like changing the image format or quality.
Yes but I think most of them use absolutely the same transformation so the resulting image is the same. I really can be wrong though.
Nah they don't. I uploaded the exact same pic to a bunch of different work profiles (slack, google, microsoft). I inspected them out of curiosity and they were all different sizes and resolutions.
Hmm then no need to worry about it I guess
You should still worry about it for manual association. I rarely use them outside work.
can't you quantise and downscale the image, then take the hash?
Yes
That works too but then the image will be the resolution of a Minetest texture after uploading.
no i mean downscaling and quantising before taking the hash to be able to reliably get the same hash for images that have been compressed, downscaled, had individual pixels edited, etc
Oh that's smart but I don't think they use it for tracking now. The most they can do is check the hash for known CSAM.