I want to preface this by saying that yes, I know that Instagram is bad. I am planning to get rid of it in the future but as of now I have to keep it for communication with people who are only on that platform.
So I have grapheneOS, use protonvpn (free version), use mull as my browser, and do not have google play services enabled on my phone. I do have some apps downloaded through aurora store such as Instagram, whatsapp, mychart, and mint mobile, but the rest came from f-droid.
I have noticed multiple times that after having private conversations on matrix, I get Instagram content in my feed that is scarily accurate to the conversation I had on the other platform immediately after. I know that things discussed in Instagram direct messages and group chat will give suggested content based on those conversations, but I get stuff that that is very specific to what I have ONLY discussed on matrix and didn’t look up via my browser.
So my question is how is Instagram doing this and what can I do to mitigate the spying it’s doing on my other apps. Thanks.
You probably discussed it because you were aware and interested in it, and your awareness and interest showed through in your other trackable habits outside of your chatroom. You only notice when they guess your interests correctly.
this is the real answer. unless you gave the app a bunch of permissions it shouldn’t have, they cannot see what you do/say in matrix. but they don’t need to. you willingly feed them enough information through location/posts/comments/private messages/friends/contacts/+a very long list of things for them you figure out your interests and serve you tailored ads.
It’s more likely than not that, but I would like to err on the side of caution and figure out a way to fix it just in case my suspicion is true.